Miami Open: Jelena Ostapenko vs Dayana Yastremska
Prediction market · Polymarket
Overview
This market refers on the tennis match between Jelena Ostapenko and Dayana Yastremska in the Miami Open, scheduled for March 20 at 1:00PM ET. This market will resolve to 'Jelena Ostapenko' if Jelena Ostapenko advances against Dayana Yastremska. This market will resolve to 'Dayana Yastremska' if Dayana Yastremska advances against Jelena Ostapenko. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the WTA Tour. A consensus of credible reporting may also be used.
Ticker
wta-ostapen-yastrem-2026-03-20
Volume
13.2K
24h volume
13.2K
1w volume
13.2K
Open interest
0
Liquidity
20.8K
Liquidity CLOB
20.8K
Start
Mar 20, 2026
End
Mar 27, 2026
Status
Active
Access
Restricted
Created
Mar 20, 2026
Resolution source
https://www.wtatennis.com/scores
Event ID
288402
Slug
wta-ostapen-yastrem-2026-03-20
Markets
10
Raw event data
{
"id": "288402",
"ticker": "wta-ostapen-yastrem-2026-03-20",
"slug": "wta-ostapen-yastrem-2026-03-20",
"title": "Miami Open: Jelena Ostapenko vs Dayana Yastremska",
"description": "This market refers on the tennis match between Jelena Ostapenko and Dayana Yastremska in the Miami Open, scheduled for March 20 at 1:00PM ET.\n\nThis market will resolve to 'Jelena Ostapenko' if Jelena Ostapenko advances against Dayana Yastremska.\n\nThis market will resolve to 'Dayana Yastremska' if Dayana Yastremska advances against Jelena Ostapenko.\n\nIf the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50.\n\nIf the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances.\n\nIf the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50.\n\nThe primary resolution source will be official information from the WTA Tour. A consensus of credible reporting may also be used.",
"resolutionSource": "https://www.wtatennis.com/scores",
"startDate": "2026-03-20T04:04:27.777517Z",
"creationDate": "2026-03-20T17:00:00Z",
"endDate": "2026-03-27T17:00:00Z",
"image": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"icon": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"active": true,
"closed": false,
"archived": false,
"new": false,
"featured": false,
"restricted": true,
"liquidity": 20791.9252,
"volume": 13205.824348000002,
"openInterest": 0,
"createdAt": "2026-03-20T04:00:05.595437Z",
"updatedAt": "2026-03-20T20:45:57.943018Z",
"competitive": 0.9999000099990001,
"volume24hr": 13205.824348,
"volume1wk": 13205.824348,
"volume1mo": 13205.824348,
"volume1yr": 13205.824348,
"enableOrderBook": true,
"liquidityClob": 20791.9252,
"negRisk": false,
"commentCount": 0,
"markets": [
{
"id": "1659322",
"question": "Set 1 Winner: Ostapenko vs Yastremska",
"conditionId": "0xd21108cf8b0f2222f213a7c25690654df1ca658ff7efad65cb28867078e8f34c",
"slug": "wta-ostapen-yastrem-2026-03-20-first-set-winner-Ostapenko-vs-Yastremska",
"resolutionSource": "https://www.wtatennis.com/scores",
"endDate": "2026-03-27T17:00:00Z",
"liquidity": "446.0871",
"startDate": "2026-03-20T05:05:32.755817Z",
"image": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"icon": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"description": "This market refers to the tennis match between Jelena Ostapenko and Dayana Yastremska in the Miami Open, scheduled for March 20 2026.\nThis market will resolve to “Ostapenko” if Jelena Ostapenko wins the first set. It will resolve to “Yastremska” if Dayana Yastremska wins the first set.\nIf the match begins but is not completed, and the first set is concluded with a winner determined, this market will resolve based on that completed set. If the first set is not completed for any reason, this market will resolve 50-50.\nIf the match is canceled (not played at all) or is delayed beyond 7 days from the scheduled date without play beginning, this market will resolve 50-50.\nResolution will be based on official WTA match statistics.",
"outcomes": "[\"Ostapenko\", \"Yastremska\"]",
"outcomePrices": "[\"0.55\", \"0.45\"]",
"volume": "17.241378",
"active": true,
"closed": false,
"marketMakerAddress": "",
"createdAt": "2026-03-20T05:00:15.158857Z",
"updatedAt": "2026-03-20T20:45:09.426692Z",
"new": false,
"featured": false,
"submitted_by": "0x91430CaD2d3975766499717fA0D66A78D814E5c5",
"archived": false,
"resolvedBy": "0x65070BE91477460D8A7AeEb94ef92fe056C2f2A7",
"restricted": true,
"groupItemTitle": "Miami Open: Jelena Ostapenko vs Dayana Yastremska Set 1 Winner",
"groupItemThreshold": "1",
"questionID": "0xe3acab07fe3ba32ed88b3453b799201a483d83c5d4a1b1c77cb6fa28395ee3ed",
"enableOrderBook": true,
"orderPriceMinTickSize": 0.01,
"orderMinSize": 5,
"volumeNum": 17.241378,
"liquidityNum": 446.0871,
"endDateIso": "2026-03-27",
"startDateIso": "2026-03-20",
"hasReviewedDates": true,
"volume24hr": 17.241378,
"volume1wk": 17.241378,
"volume1mo": 17.241378,
"volume1yr": 17.241378,
"gameStartTime": "2026-03-20 21:50:00+00",
"secondsDelay": 3,
"clobTokenIds": "[\"38325171232861191838810020072832233105752230508999527493258316912858897795492\", \"54247611731067834929146009829959300308600210534781374762628062349659032982293\"]",
"umaBond": "500",
"umaReward": "2",
"volume24hrClob": 17.241378,
"volume1wkClob": 17.241378,
"volume1moClob": 17.241378,
"volume1yrClob": 17.241378,
"volumeClob": 17.241378,
"liquidityClob": 446.0871,
"customLiveness": 0,
"acceptingOrders": true,
"negRisk": false,
"negRiskRequestID": "",
"ready": false,
"funded": false,
"acceptingOrdersTimestamp": "2026-03-20T05:04:27Z",
"cyom": false,
"competitive": 0.9975062344139651,
"pagerDutyNotificationEnabled": false,
"approved": true,
"rewardsMinSize": 50,
"rewardsMaxSpread": 4.5,
"spread": 0.06,
"lastTradePrice": 0.58,
"bestBid": 0.52,
"bestAsk": 0.58,
"automaticallyActive": true,
"clearBookOnStart": true,
"manualActivation": false,
"negRiskOther": false,
"sportsMarketType": "tennis_first_set_winner",
"umaResolutionStatuses": "[]",
"pendingDeployment": false,
"deploying": false,
"deployingTimestamp": "2026-03-20T05:00:38.371371Z",
"rfqEnabled": false,
"holdingRewardsEnabled": false,
"feesEnabled": false,
"requiresTranslation": false,
"feeType": null
},
{
"id": "1659323",
"question": "Ostapenko vs. Yastremska: Match O/U 21.5",
"conditionId": "0xc00ea0c12d2c344beec55bb3277c693e00886ca156dcf7eae08ff69ad4390e60",
"slug": "wta-ostapen-yastrem-2026-03-20-match-total-21pt5",
"resolutionSource": "https://www.wtatennis.com/scores",
"endDate": "2026-03-27T17:00:00Z",
"liquidity": "353.9371",
"startDate": "2026-03-20T05:04:39.538372Z",
"image": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"icon": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"description": "This market refers to the tennis match between Jelena Ostapenko and Dayana Yastremska in the Miami Open, scheduled for March 20 2026.\nThis market will resolve to \"Over\" if the total number of games completed across all sets equals or exceeds 22. Otherwise, it will resolve to \"Under.\"\nAll tiebreaks—including any Champions/Super tiebreak—count as one (1) game toward the total.\nIf the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50.\nResolution will be based on official WTA statistics.",
"outcomes": "[\"Over\", \"Under\"]",
"outcomePrices": "[\"0.51\", \"0.49\"]",
"volume": "5.660376",
"active": true,
"closed": false,
"marketMakerAddress": "",
"createdAt": "2026-03-20T05:00:15.159858Z",
"updatedAt": "2026-03-20T20:45:13.438942Z",
"new": false,
"featured": false,
"submitted_by": "0x91430CaD2d3975766499717fA0D66A78D814E5c5",
"archived": false,
"resolvedBy": "0x65070BE91477460D8A7AeEb94ef92fe056C2f2A7",
"restricted": true,
"groupItemTitle": "Miami Open: Jelena Ostapenko vs Dayana Yastremska Match O/U 21.5",
"groupItemThreshold": "1",
"questionID": "0x0c26c63425a1fcc0b395921e035de186bc3e43214ce6d4f39e36c49730c8fc97",
"enableOrderBook": true,
"orderPriceMinTickSize": 0.01,
"orderMinSize": 5,
"volumeNum": 5.660376,
"liquidityNum": 353.9371,
"endDateIso": "2026-03-27",
"startDateIso": "2026-03-20",
"hasReviewedDates": true,
"volume24hr": 5.660376,
"volume1wk": 5.660376,
"volume1mo": 5.660376,
"volume1yr": 5.660376,
"gameStartTime": "2026-03-20 21:50:00+00",
"secondsDelay": 3,
"clobTokenIds": "[\"48333443025926024190005697810203279150954741508553258784942483089290211205096\", \"113878665985890309123941577340579527906080487122124619588939199833922159383375\"]",
"umaBond": "500",
"umaReward": "2",
"volume24hrClob": 5.660376,
"volume1wkClob": 5.660376,
"volume1moClob": 5.660376,
"volume1yrClob": 5.660376,
"volumeClob": 5.660376,
"liquidityClob": 353.9371,
"customLiveness": 0,
"acceptingOrders": true,
"negRisk": false,
"negRiskRequestID": "",
"ready": false,
"funded": false,
"acceptingOrdersTimestamp": "2026-03-20T05:03:33Z",
"cyom": false,
"competitive": 0.9999000099990001,
"pagerDutyNotificationEnabled": false,
"approved": true,
"rewardsMinSize": 50,
"rewardsMaxSpread": 4.5,
"spread": 0.06,
"lastTradePrice": 0.53,
"bestBid": 0.48,
"bestAsk": 0.54,
"automaticallyActive": true,
"clearBookOnStart": true,
"manualActivation": false,
"negRiskOther": false,
"sportsMarketType": "tennis_match_totals",
"line": 21.5,
"umaResolutionStatuses": "[]",
"pendingDeployment": false,
"deploying": false,
"deployingTimestamp": "2026-03-20T05:00:38.379795Z",
"rfqEnabled": false,
"holdingRewardsEnabled": false,
"feesEnabled": false,
"requiresTranslation": false,
"feeType": null
},
{
"id": "1659328",
"question": "Ostapenko vs. Yastremska: Match O/U 22.5",
"conditionId": "0xc8d5211a12086d1925e4040a67e73751ce87b8f1a2f51cd4b7f1684c38cf8f1c",
"slug": "wta-ostapen-yastrem-2026-03-20-match-total-22pt5",
"resolutionSource": "https://www.wtatennis.com/scores",
"endDate": "2026-03-27T17:00:00Z",
"liquidity": "441.6101",
"startDate": "2026-03-20T05:04:47.81743Z",
"image": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"icon": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"description": "This market refers to the tennis match between Jelena Ostapenko and Dayana Yastremska in the Miami Open, scheduled for March 20 2026.\nThis market will resolve to \"Over\" if the total number of games completed across all sets equals or exceeds 23. Otherwise, it will resolve to \"Under.\"\nAll tiebreaks—including any Champions/Super tiebreak—count as one (1) game toward the total.\nIf the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50.\nResolution will be based on official WTA statistics.",
"outcomes": "[\"Over\", \"Under\"]",
"outcomePrices": "[\"0.445\", \"0.555\"]",
"active": true,
"closed": false,
"marketMakerAddress": "",
"createdAt": "2026-03-20T05:00:15.276693Z",
"updatedAt": "2026-03-20T20:45:07.107024Z",
"new": false,
"featured": false,
"submitted_by": "0x91430CaD2d3975766499717fA0D66A78D814E5c5",
"archived": false,
"resolvedBy": "0x65070BE91477460D8A7AeEb94ef92fe056C2f2A7",
"restricted": true,
"groupItemTitle": "Miami Open: Jelena Ostapenko vs Dayana Yastremska Match O/U 22.5",
"groupItemThreshold": "1",
"questionID": "0xbabf6be0a1db8473b3fbb40218ae396c0e459ed3cc6d61d6bfe781cec4f81274",
"enableOrderBook": true,
"orderPriceMinTickSize": 0.01,
"orderMinSize": 5,
"liquidityNum": 441.6101,
"endDateIso": "2026-03-27",
"startDateIso": "2026-03-20",
"hasReviewedDates": true,
"gameStartTime": "2026-03-20 21:50:00+00",
"secondsDelay": 3,
"clobTokenIds": "[\"39050201390895052822324268889644579707339485456151500248125280466039887851051\", \"85844828080076065460472469880618159677025169556831739594193820502957211924412\"]",
"umaBond": "500",
"umaReward": "2",
"liquidityClob": 441.6101,
"customLiveness": 0,
"acceptingOrders": true,
"negRisk": false,
"negRiskRequestID": "",
"ready": false,
"funded": false,
"acceptingOrdersTimestamp": "2026-03-20T05:03:41Z",
"cyom": false,
"competitive": 0.9969841230278408,
"pagerDutyNotificationEnabled": false,
"approved": true,
"rewardsMinSize": 50,
"rewardsMaxSpread": 4.5,
"spread": 0.07,
"bestBid": 0.41,
"bestAsk": 0.48,
"automaticallyActive": true,
"clearBookOnStart": true,
"manualActivation": false,
"negRiskOther": false,
"sportsMarketType": "tennis_match_totals",
"line": 22.5,
"umaResolutionStatuses": "[]",
"pendingDeployment": false,
"deploying": false,
"deployingTimestamp": "2026-03-20T05:00:38.38807Z",
"rfqEnabled": false,
"holdingRewardsEnabled": false,
"feesEnabled": false,
"requiresTranslation": false,
"feeType": null
},
{
"id": "1659329",
"question": "Ostapenko vs. Yastremska: Match O/U 23.5",
"conditionId": "0x4a002464443de8232b8e7551321c24aab75f8565b525371f268442d8495fc2ce",
"slug": "wta-ostapen-yastrem-2026-03-20-match-total-23pt5",
"resolutionSource": "https://www.wtatennis.com/scores",
"endDate": "2026-03-27T17:00:00Z",
"liquidity": "6.5804",
"startDate": "2026-03-20T05:06:41.449088Z",
"image": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"icon": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"description": "This market refers to the tennis match between Jelena Ostapenko and Dayana Yastremska in the Miami Open, scheduled for March 20 2026.\nThis market will resolve to \"Over\" if the total number of games completed across all sets equals or exceeds 24. Otherwise, it will resolve to \"Under.\"\nAll tiebreaks—including any Champions/Super tiebreak—count as one (1) game toward the total.\nIf the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50.\nResolution will be based on official WTA statistics.",
"outcomes": "[\"Over\", \"Under\"]",
"outcomePrices": "[\"0.505\", \"0.495\"]",
"volume": "25.06",
"active": true,
"closed": false,
"marketMakerAddress": "",
"createdAt": "2026-03-20T05:00:15.386255Z",
"updatedAt": "2026-03-20T20:45:23.678012Z",
"new": false,
"featured": false,
"submitted_by": "0x91430CaD2d3975766499717fA0D66A78D814E5c5",
"archived": false,
"resolvedBy": "0x65070BE91477460D8A7AeEb94ef92fe056C2f2A7",
"restricted": true,
"groupItemTitle": "Miami Open: Jelena Ostapenko vs Dayana Yastremska Match O/U 23.5",
"groupItemThreshold": "1",
"questionID": "0xff4c86eadd99a883ad86f1016a7e21fe4d7112c4def19c36380109e6f2f7e2a1",
"enableOrderBook": true,
"orderPriceMinTickSize": 0.01,
"orderMinSize": 5,
"volumeNum": 25.06,
"liquidityNum": 6.5804,
"endDateIso": "2026-03-27",
"startDateIso": "2026-03-20",
"hasReviewedDates": true,
"volume24hr": 25.06,
"volume1wk": 25.06,
"volume1mo": 25.06,
"volume1yr": 25.06,
"gameStartTime": "2026-03-20 21:50:00+00",
"secondsDelay": 3,
"clobTokenIds": "[\"55253095619915954058097850229205311868608955885251998710932320169843261667200\", \"87692924189554313625382044748151369989664653437680000030991262038187102135346\"]",
"umaBond": "500",
"umaReward": "2",
"volume24hrClob": 25.06,
"volume1wkClob": 25.06,
"volume1moClob": 25.06,
"volume1yrClob": 25.06,
"volumeClob": 25.06,
"liquidityClob": 6.5804,
"customLiveness": 0,
"acceptingOrders": true,
"negRisk": false,
"negRiskRequestID": "",
"ready": false,
"funded": false,
"acceptingOrdersTimestamp": "2026-03-20T05:05:35Z",
"cyom": false,
"competitive": 0.2499937501562461,
"pagerDutyNotificationEnabled": false,
"approved": true,
"rewardsMinSize": 50,
"rewardsMaxSpread": 4.5,
"spread": 0.75,
"bestBid": 0.13,
"bestAsk": 0.88,
"automaticallyActive": true,
"clearBookOnStart": true,
"manualActivation": false,
"negRiskOther": false,
"sportsMarketType": "tennis_match_totals",
"line": 23.5,
"umaResolutionStatuses": "[]",
"pendingDeployment": false,
"deploying": false,
"deployingTimestamp": "2026-03-20T05:00:38.390892Z",
"rfqEnabled": false,
"holdingRewardsEnabled": false,
"feesEnabled": false,
"requiresTranslation": false,
"feeType": null
},
{
"id": "1659324",
"question": "Ostapenko vs. Yastremska: Set 1 Games O/U 8.5",
"conditionId": "0x9f12db1e871a74cb041dfd6eba0401e9dd2ca99b4e7466dfbe27afffd3ccb668",
"slug": "wta-ostapen-yastrem-2026-03-20-first-set-total-8pt5",
"resolutionSource": "https://www.wtatennis.com/scores",
"endDate": "2026-03-27T17:00:00Z",
"liquidity": "240.7076",
"startDate": "2026-03-20T05:07:15.163454Z",
"image": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"icon": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"description": "This market refers to the tennis match between Jelena Ostapenko and Dayana Yastremska in the Miami Open, scheduled for March 20 2026.\nThis market will resolve to \"Over\" if the total number of games completed in the first set equals or exceeds 9. Otherwise, it will resolve to \"Under.\"\nAny first-set tiebreak counts as one (1) game toward the total.\nIf the first set is not completed for any reason, this market will resolve 50-50. If the match is canceled before play begins, or delayed beyond 7 days without commencement, this market will also resolve 50-50.\nResolution will be based on official WTA results.",
"outcomes": "[\"Over\", \"Under\"]",
"outcomePrices": "[\"0.705\", \"0.295\"]",
"active": true,
"closed": false,
"marketMakerAddress": "",
"createdAt": "2026-03-20T05:00:15.161416Z",
"updatedAt": "2026-03-20T20:45:19.888151Z",
"new": false,
"featured": false,
"submitted_by": "0x91430CaD2d3975766499717fA0D66A78D814E5c5",
"archived": false,
"resolvedBy": "0x65070BE91477460D8A7AeEb94ef92fe056C2f2A7",
"restricted": true,
"groupItemTitle": "Miami Open: Jelena Ostapenko vs Dayana Yastremska Set 1 O/U 8.5",
"groupItemThreshold": "2",
"questionID": "0xd0bd39eec490774ec6589ba84310c906e34288569175ccb6541f5a29894133a4",
"enableOrderBook": true,
"orderPriceMinTickSize": 0.01,
"orderMinSize": 5,
"liquidityNum": 240.7076,
"endDateIso": "2026-03-27",
"startDateIso": "2026-03-20",
"hasReviewedDates": true,
"gameStartTime": "2026-03-20 21:50:00+00",
"secondsDelay": 3,
"clobTokenIds": "[\"67444704200468776566170716023715226061074279719370108142035093943284734352341\", \"72119910707546615250575392910977065061850796804014297978356860495162405551616\"]",
"umaBond": "500",
"umaReward": "2",
"liquidityClob": 240.7076,
"customLiveness": 0,
"acceptingOrders": true,
"negRisk": false,
"negRiskRequestID": "",
"ready": false,
"funded": false,
"acceptingOrdersTimestamp": "2026-03-20T05:06:09Z",
"cyom": false,
"competitive": 0.9596698735634942,
"pagerDutyNotificationEnabled": false,
"approved": true,
"rewardsMinSize": 50,
"rewardsMaxSpread": 4.5,
"spread": 0.07,
"bestBid": 0.67,
"bestAsk": 0.74,
"automaticallyActive": true,
"clearBookOnStart": true,
"manualActivation": false,
"negRiskOther": false,
"sportsMarketType": "tennis_first_set_totals",
"line": 8.5,
"umaResolutionStatuses": "[]",
"pendingDeployment": false,
"deploying": false,
"deployingTimestamp": "2026-03-20T05:00:38.382543Z",
"rfqEnabled": false,
"holdingRewardsEnabled": false,
"feesEnabled": false,
"requiresTranslation": false,
"feeType": null
},
{
"id": "1659327",
"question": "Ostapenko vs. Yastremska: Set 1 Games O/U 9.5",
"conditionId": "0xa2da7d86c607d5f99c89afb9c0df8a99ad8f9a06426db0f756bdda5963a4a4ad",
"slug": "wta-ostapen-yastrem-2026-03-20-first-set-total-9pt5",
"resolutionSource": "https://www.wtatennis.com/scores",
"endDate": "2026-03-27T17:00:00Z",
"liquidity": "5.3273",
"startDate": "2026-03-20T05:04:28.859625Z",
"image": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"icon": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"description": "This market refers to the tennis match between Jelena Ostapenko and Dayana Yastremska in the Miami Open, scheduled for March 20 2026.\nThis market will resolve to \"Over\" if the total number of games completed in the first set equals or exceeds 10. Otherwise, it will resolve to \"Under.\"\nAny first-set tiebreak counts as one (1) game toward the total.\nIf the first set is not completed for any reason, this market will resolve 50-50. If the match is canceled before play begins, or delayed beyond 7 days without commencement, this market will also resolve 50-50.\nResolution will be based on official WTA results.",
"outcomes": "[\"Over\", \"Under\"]",
"outcomePrices": "[\"0.505\", \"0.495\"]",
"active": true,
"closed": false,
"marketMakerAddress": "",
"createdAt": "2026-03-20T05:00:15.275874Z",
"updatedAt": "2026-03-20T20:45:31.536084Z",
"new": false,
"featured": false,
"submitted_by": "0x91430CaD2d3975766499717fA0D66A78D814E5c5",
"archived": false,
"resolvedBy": "0x65070BE91477460D8A7AeEb94ef92fe056C2f2A7",
"restricted": true,
"groupItemTitle": "Miami Open: Jelena Ostapenko vs Dayana Yastremska Set 1 O/U 9.5",
"groupItemThreshold": "2",
"questionID": "0xc3d97752804bdff6ea5fa4b4713f9d29e4ac8483c1c48b30a2ec78c6d780bb22",
"enableOrderBook": true,
"orderPriceMinTickSize": 0.01,
"orderMinSize": 5,
"liquidityNum": 5.3273,
"endDateIso": "2026-03-27",
"startDateIso": "2026-03-20",
"hasReviewedDates": true,
"gameStartTime": "2026-03-20 21:50:00+00",
"secondsDelay": 3,
"clobTokenIds": "[\"49696931840913146199986353757108050754595681867096026206086656406767541915120\", \"61159907219188379349146267479879662624180376993618830227460883933749048880190\"]",
"umaBond": "500",
"umaReward": "2",
"liquidityClob": 5.3273,
"customLiveness": 0,
"acceptingOrders": true,
"negRisk": false,
"negRiskRequestID": "",
"ready": false,
"funded": false,
"acceptingOrdersTimestamp": "2026-03-20T05:03:23Z",
"cyom": false,
"competitive": 0.14999625009374765,
"pagerDutyNotificationEnabled": false,
"approved": true,
"rewardsMinSize": 50,
"rewardsMaxSpread": 4.5,
"spread": 0.85,
"bestBid": 0.08,
"bestAsk": 0.93,
"automaticallyActive": true,
"clearBookOnStart": true,
"manualActivation": false,
"negRiskOther": false,
"sportsMarketType": "tennis_first_set_totals",
"line": 9.5,
"umaResolutionStatuses": "[]",
"pendingDeployment": false,
"deploying": false,
"deployingTimestamp": "2026-03-20T05:00:38.385354Z",
"rfqEnabled": false,
"holdingRewardsEnabled": false,
"feesEnabled": false,
"requiresTranslation": false,
"feeType": null
},
{
"id": "1659330",
"question": "Ostapenko vs. Yastremska: Set 1 Games O/U 10.5",
"conditionId": "0x2b95b73fe4ae5e0e0e117b7ffedd1b0c4bccd3847b42c295cf104e5a32f5c03d",
"slug": "wta-ostapen-yastrem-2026-03-20-first-set-total-10pt5",
"resolutionSource": "https://www.wtatennis.com/scores",
"endDate": "2026-03-27T17:00:00Z",
"liquidity": "241.2371",
"startDate": "2026-03-20T05:07:36.090388Z",
"image": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"icon": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"description": "This market refers to the tennis match between Jelena Ostapenko and Dayana Yastremska in the Miami Open, scheduled for March 20 2026.\nThis market will resolve to \"Over\" if the total number of games completed in the first set equals or exceeds 11. Otherwise, it will resolve to \"Under.\"\nAny first-set tiebreak counts as one (1) game toward the total.\nIf the first set is not completed for any reason, this market will resolve 50-50. If the match is canceled before play begins, or delayed beyond 7 days without commencement, this market will also resolve 50-50.\nResolution will be based on official WTA results.",
"outcomes": "[\"Over\", \"Under\"]",
"outcomePrices": "[\"0.235\", \"0.765\"]",
"active": true,
"closed": false,
"marketMakerAddress": "",
"createdAt": "2026-03-20T05:00:15.405246Z",
"updatedAt": "2026-03-20T20:45:00.903665Z",
"new": false,
"featured": false,
"submitted_by": "0x91430CaD2d3975766499717fA0D66A78D814E5c5",
"archived": false,
"resolvedBy": "0x65070BE91477460D8A7AeEb94ef92fe056C2f2A7",
"restricted": true,
"groupItemTitle": "Miami Open: Jelena Ostapenko vs Dayana Yastremska Set 1 O/U 10.5",
"groupItemThreshold": "2",
"questionID": "0x99098425ba5a9ca27649d8bf253ef18a7ed31baf428794b8032f308ce12cd88b",
"enableOrderBook": true,
"orderPriceMinTickSize": 0.01,
"orderMinSize": 5,
"liquidityNum": 241.2371,
"endDateIso": "2026-03-27",
"startDateIso": "2026-03-20",
"hasReviewedDates": true,
"gameStartTime": "2026-03-20 21:50:00+00",
"secondsDelay": 3,
"clobTokenIds": "[\"42880500537632234416908134158337810687485196869427964210248533475553186752957\", \"103497994119589653069816164820952510104576101737658426162743849538312449507863\"]",
"umaBond": "500",
"umaReward": "2",
"liquidityClob": 241.2371,
"customLiveness": 0,
"acceptingOrders": true,
"negRisk": false,
"negRiskRequestID": "",
"ready": false,
"funded": false,
"acceptingOrdersTimestamp": "2026-03-20T05:06:29Z",
"cyom": false,
"competitive": 0.934382956854867,
"pagerDutyNotificationEnabled": false,
"approved": true,
"rewardsMinSize": 50,
"rewardsMaxSpread": 4.5,
"spread": 0.07,
"bestBid": 0.2,
"bestAsk": 0.27,
"automaticallyActive": true,
"clearBookOnStart": true,
"manualActivation": false,
"negRiskOther": false,
"sportsMarketType": "tennis_first_set_totals",
"line": 10.5,
"umaResolutionStatuses": "[]",
"pendingDeployment": false,
"deploying": false,
"deployingTimestamp": "2026-03-20T05:00:38.393764Z",
"rfqEnabled": false,
"holdingRewardsEnabled": false,
"feesEnabled": false,
"requiresTranslation": false,
"feeType": null
},
{
"id": "1659325",
"question": "Jelena Ostapenko vs. Dayana Yastremska: Total Sets O/U 2.5",
"conditionId": "0x69461b22085afd8ae99b60c70da674421d08c273498cc0bd47184e760e33295a",
"slug": "wta-ostapen-yastrem-2026-03-20-set-totals-2pt5",
"resolutionSource": "https://www.wtatennis.com/scores",
"endDate": "2026-03-27T17:00:00Z",
"liquidity": "452.5167",
"startDate": "2026-03-20T05:09:04.442184Z",
"image": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"icon": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"description": "This market refers to the tennis match between Jelena Ostapenko and Dayana Yastremska in the Miami Open, scheduled for March 20 2026.\nThis market will resolve to \"Over\" if the total number of sets completed equals or exceeds 3. Otherwise, it will resolve to \"Under.\"\nA super tie breaker is considered as one (1) set for total set markets.\nIf the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50.\nResolution will be based on official WTA statistics.",
"outcomes": "[\"Over 2.5\", \"Under 2.5\"]",
"outcomePrices": "[\"0.4\", \"0.6\"]",
"volume": "10",
"active": true,
"closed": false,
"marketMakerAddress": "",
"createdAt": "2026-03-20T05:00:15.165425Z",
"updatedAt": "2026-03-20T20:45:05.949916Z",
"new": false,
"featured": false,
"submitted_by": "0x91430CaD2d3975766499717fA0D66A78D814E5c5",
"archived": false,
"resolvedBy": "0x65070BE91477460D8A7AeEb94ef92fe056C2f2A7",
"restricted": true,
"groupItemTitle": "Miami Open: Jelena Ostapenko vs Dayana Yastremska Total Sets: O/U 2.5",
"groupItemThreshold": "1",
"questionID": "0xbcc5705bfd00d8fac102f9818896321e73a3c30c146d204bc88b1a2ee6e57673",
"enableOrderBook": true,
"orderPriceMinTickSize": 0.01,
"orderMinSize": 5,
"volumeNum": 10,
"liquidityNum": 452.5167,
"endDateIso": "2026-03-27",
"startDateIso": "2026-03-20",
"hasReviewedDates": true,
"volume24hr": 10,
"volume1wk": 10,
"volume1mo": 10,
"volume1yr": 10,
"gameStartTime": "2026-03-20 21:50:00+00",
"secondsDelay": 3,
"clobTokenIds": "[\"114626857243271340590881856500550814361806934080736390538925218757550624775023\", \"7052742374970881884752664346801932225894637333850809697033856697966727057856\"]",
"umaBond": "500",
"umaReward": "2",
"volume24hrClob": 10,
"volume1wkClob": 10,
"volume1moClob": 10,
"volume1yrClob": 10,
"volumeClob": 10,
"liquidityClob": 452.5167,
"customLiveness": 0,
"acceptingOrders": true,
"negRisk": false,
"negRiskRequestID": "",
"ready": false,
"funded": false,
"acceptingOrdersTimestamp": "2026-03-20T05:07:59Z",
"cyom": false,
"competitive": 0.9900990099009901,
"pagerDutyNotificationEnabled": false,
"approved": true,
"rewardsMinSize": 50,
"rewardsMaxSpread": 4.5,
"spread": 0.06,
"bestBid": 0.37,
"bestAsk": 0.43,
"automaticallyActive": true,
"clearBookOnStart": true,
"manualActivation": false,
"negRiskOther": false,
"sportsMarketType": "tennis_set_totals",
"line": 2.5,
"umaResolutionStatuses": "[]",
"pendingDeployment": false,
"deploying": false,
"deployingTimestamp": "2026-03-20T05:00:38.374222Z",
"rfqEnabled": false,
"holdingRewardsEnabled": false,
"feesEnabled": false,
"requiresTranslation": false,
"feeType": null
},
{
"id": "1659326",
"question": "Set Handicap: Ostapenko (-1.5) vs Yastremska (+1.5)",
"conditionId": "0xb379b8e161e4068cfe7448b44aff7eb3ec8c8cba4cc393fbd54de5ee16ef3c6f",
"slug": "wta-ostapen-yastrem-2026-03-20-set-handicap-home-1pt5",
"resolutionSource": "https://www.wtatennis.com/scores",
"endDate": "2026-03-27T17:00:00Z",
"liquidity": "5233.5207",
"startDate": "2026-03-20T05:03:59.013899Z",
"image": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"icon": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"description": "This market refers to the tennis match between Jelena Ostapenko and Dayana Yastremska in the Miami Open, scheduled for March 20 2026.\nThis market will resolve to \"Ostapenko\" if Jelena Ostapenko wins by 2 or more sets than Dayana Yastremska, based on the final completed score. Otherwise, it will resolve to \"Yastremska.\"\nIf the match begins but is not completed, this market will resolve 50-50. If the match is canceled before play begins or delayed beyond 7 days from the scheduled date without a result, this market will also resolve 50-50.\nResolution will be based on official WTA results.",
"outcomes": "[\"Ostapenko\", \"Yastremska\"]",
"outcomePrices": "[\"0.34\", \"0.66\"]",
"volume": "3484.400582",
"active": true,
"closed": false,
"marketMakerAddress": "",
"createdAt": "2026-03-20T05:00:15.254959Z",
"updatedAt": "2026-03-20T20:45:05.046129Z",
"new": false,
"featured": false,
"submitted_by": "0x91430CaD2d3975766499717fA0D66A78D814E5c5",
"archived": false,
"resolvedBy": "0x65070BE91477460D8A7AeEb94ef92fe056C2f2A7",
"restricted": true,
"groupItemTitle": "Miami Open: Jelena Ostapenko vs Dayana Yastremska Set Handicap +/-1.5",
"groupItemThreshold": "1",
"questionID": "0x6a8ee09172f860839344956a56223a1f2b9c68d534cd8dc642be2053f6f8e1d6",
"enableOrderBook": true,
"orderPriceMinTickSize": 0.01,
"orderMinSize": 5,
"volumeNum": 3484.400582,
"liquidityNum": 5233.5207,
"endDateIso": "2026-03-27",
"startDateIso": "2026-03-20",
"hasReviewedDates": true,
"volume24hr": 3484.400582,
"volume1wk": 3484.400582,
"volume1mo": 3484.400582,
"volume1yr": 3484.400582,
"gameStartTime": "2026-03-20 21:50:00+00",
"secondsDelay": 3,
"clobTokenIds": "[\"5730844248654204364702817956223440766624494477907265750674359980387021366504\", \"114585140248868655791108109317878428197237451238509271492996762862330001514867\"]",
"umaBond": "500",
"umaReward": "2",
"volume24hrClob": 3484.400582,
"volume1wkClob": 3484.400582,
"volume1moClob": 3484.400582,
"volume1yrClob": 3484.400582,
"volumeClob": 3484.400582,
"liquidityClob": 5233.5207,
"customLiveness": 0,
"acceptingOrders": true,
"negRisk": false,
"negRiskRequestID": "",
"ready": false,
"funded": false,
"acceptingOrdersTimestamp": "2026-03-20T05:02:53Z",
"cyom": false,
"competitive": 0.9750390015600624,
"pagerDutyNotificationEnabled": false,
"approved": true,
"rewardsMinSize": 50,
"rewardsMaxSpread": 4.5,
"spread": 0.02,
"lastTradePrice": 0.35,
"bestBid": 0.33,
"bestAsk": 0.35,
"automaticallyActive": true,
"clearBookOnStart": true,
"manualActivation": false,
"negRiskOther": false,
"sportsMarketType": "tennis_set_handicap",
"line": 1.5,
"umaResolutionStatuses": "[]",
"pendingDeployment": false,
"deploying": false,
"deployingTimestamp": "2026-03-20T05:00:38.376969Z",
"rfqEnabled": false,
"holdingRewardsEnabled": false,
"feesEnabled": false,
"requiresTranslation": false,
"feeType": null
},
{
"id": "1658779",
"question": "Miami Open: Jelena Ostapenko vs Dayana Yastremska",
"conditionId": "0x83a6f38360593d5ff9325a8483ad48d75ea724489130882156d782300beea25a",
"slug": "wta-ostapen-yastrem-2026-03-20",
"resolutionSource": "https://www.wtatennis.com/scores",
"endDate": "2026-03-27T17:00:00Z",
"liquidity": "13370.4011",
"startDate": "2026-03-20T04:02:33.100937Z",
"image": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"icon": "https://polymarket-upload.s3.us-east-2.amazonaws.com/wta-logo-41f331bdf1.png",
"description": "This market refers on the tennis match between Jelena Ostapenko and Dayana Yastremska in the Miami Open, scheduled for March 20 at 1:00PM ET.\n\nThis market will resolve to 'Jelena Ostapenko' if Jelena Ostapenko advances against Dayana Yastremska.\n\nThis market will resolve to 'Dayana Yastremska' if Dayana Yastremska advances against Jelena Ostapenko.\n\nIf the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50.\n\nIf the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances.\n\nIf the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50.\n\nThe primary resolution source will be official information from the WTA Tour. A consensus of credible reporting may also be used.",
"outcomes": "[\"Jelena Ostapenko\", \"Dayana Yastremska\"]",
"outcomePrices": "[\"0.595\", \"0.405\"]",
"volume": "9663.462012000002",
"active": true,
"closed": false,
"marketMakerAddress": "",
"createdAt": "2026-03-20T04:00:05.699658Z",
"updatedAt": "2026-03-20T20:45:09.723889Z",
"new": false,
"featured": false,
"submitted_by": "0x91430CaD2d3975766499717fA0D66A78D814E5c5",
"archived": false,
"resolvedBy": "0x65070BE91477460D8A7AeEb94ef92fe056C2f2A7",
"restricted": true,
"groupItemThreshold": "0",
"questionID": "0xc003b86139f30986b9b27622a3423823b56eddbff6389727f28d3cf577104cd2",
"enableOrderBook": true,
"orderPriceMinTickSize": 0.01,
"orderMinSize": 5,
"volumeNum": 9663.462012000002,
"liquidityNum": 13370.4011,
"endDateIso": "2026-03-27",
"startDateIso": "2026-03-20",
"hasReviewedDates": true,
"volume24hr": 9663.462012,
"volume1wk": 9663.462012,
"volume1mo": 9663.462012,
"volume1yr": 9663.462012,
"gameStartTime": "2026-03-20 21:50:00+00",
"secondsDelay": 3,
"clobTokenIds": "[\"32600113665995965617823517904955862127107275626711743006217165227433765236623\", \"44512514661710294618352085295359218608524192578156031004427150719060515506935\"]",
"umaBond": "500",
"umaReward": "2",
"volume24hrClob": 9663.462012,
"volume1wkClob": 9663.462012,
"volume1moClob": 9663.462012,
"volume1yrClob": 9663.462012,
"volumeClob": 9663.462012000002,
"liquidityClob": 13370.4011,
"customLiveness": 0,
"acceptingOrders": true,
"negRisk": false,
"negRiskRequestID": "",
"ready": false,
"funded": false,
"acceptingOrdersTimestamp": "2026-03-20T04:01:27Z",
"cyom": false,
"competitive": 0.9910557221079755,
"pagerDutyNotificationEnabled": false,
"approved": true,
"rewardsMinSize": 50,
"rewardsMaxSpread": 4.5,
"spread": 0.01,
"lastTradePrice": 0.59,
"bestBid": 0.59,
"bestAsk": 0.6,
"automaticallyActive": true,
"clearBookOnStart": true,
"manualActivation": false,
"negRiskOther": false,
"sportsMarketType": "moneyline",
"umaResolutionStatuses": "[]",
"pendingDeployment": false,
"deploying": false,
"deployingTimestamp": "2026-03-20T04:00:12.349097Z",
"rfqEnabled": false,
"holdingRewardsEnabled": false,
"feesEnabled": false,
"requiresTranslation": false,
"feeType": null
}
],
"series": [
{
"id": "10366",
"ticker": "wta",
"slug": "wta",
"title": "WTA",
"seriesType": "single",
"recurrence": "daily",
"image": "",
"icon": "",
"active": true,
"closed": false,
"archived": false,
"featured": false,
"restricted": true,
"createdAt": "2025-10-07T17:08:50.305974Z",
"updatedAt": "2026-03-20T20:46:10.867713Z",
"volume24hr": 3354990.870098999,
"volume": 2272005.844674,
"liquidity": 7541189.50765,
"commentCount": 549,
"requiresTranslation": false
}
],
"tags": [
{
"id": "864",
"label": "Tennis",
"slug": "tennis",
"forceShow": false,
"publishedAt": "2024-01-12 19:45:09.662+00",
"createdAt": "2024-01-12T19:45:09.677Z",
"updatedAt": "2026-03-09T22:29:03.536861Z",
"requiresTranslation": false
},
{
"id": "1",
"label": "Sports",
"slug": "sports",
"forceShow": false,
"publishedAt": "2023-10-24 22:37:50.296+00",
"updatedBy": 15,
"createdAt": "2023-10-24T22:37:50.31Z",
"updatedAt": "2026-03-09T22:25:22.69129Z",
"forceHide": true,
"requiresTranslation": false
},
{
"id": "100639",
"label": "Games",
"slug": "games",
"forceShow": false,
"createdAt": "2024-09-23T22:41:37.670714Z",
"updatedAt": "2026-03-09T22:28:03.358133Z",
"requiresTranslation": false
}
],
"cyom": false,
"showAllOutcomes": true,
"showMarketImages": false,
"enableNegRisk": false,
"automaticallyActive": true,
"eventDate": "2026-03-20",
"startTime": "2026-03-20T21:50:00Z",
"seriesSlug": "wta",
"negRiskAugmented": false,
"pendingDeployment": false,
"deploying": false,
"gameId": 5260612,
"requiresTranslation": false,
"eventMetadata": {
"context_description": "Jelena Ostapenko holds a 59.5% implied probability edge over Dayana Yastremska in their Miami Open third-round matchup, reflecting traders' view of her superior hard-court pedigree and recent momentum. The No. 11 seed powered through straight-set wins over Caty McNally and Anastasia Potapova, extending a strong 2024 form with a Linz title and Indian Wells quarters. Yastremska, unranked top-30 but surging with upsets over Ekaterina Alexandrova and Madison Brengle, trails 1-1 in head-to-heads yet struggles against Ostapenko's flat-hitting aggression in rallies. No injuries mar official reports; Ostapenko's big-match experience and rest advantage post-earlier rounds underpin the consensus.",
"context_requires_regen": false,
"context_updated_at": "2026-03-20T05:00:40.335Z",
"league": "Miami Open"
}
}- Ostapenko vs. Yastremska: Set 1 Games O/U 8.5Vol —Liq 241End Mar 27, 2026OpenOrder book
- Miami Open: Jelena Ostapenko vs Dayana YastremskaVol 9.7KLiq 13.4KEnd Mar 27, 2026OpenOrder book
- Set 1 Winner: Ostapenko vs YastremskaVol 17Liq 446End Mar 27, 2026OpenOrder book
- Ostapenko vs. Yastremska: Match O/U 21.5Vol 6Liq 354End Mar 27, 2026OpenOrder book
- Ostapenko vs. Yastremska: Match O/U 23.5Vol 25Liq 7End Mar 27, 2026OpenOrder book
- Ostapenko vs. Yastremska: Set 1 Games O/U 9.5Vol —Liq 5End Mar 27, 2026OpenOrder book
- Ostapenko vs. Yastremska: Match O/U 22.5Vol —Liq 442End Mar 27, 2026OpenOrder book
- Jelena Ostapenko vs. Dayana Yastremska: Total Sets O/U 2.5Vol 10Liq 453End Mar 27, 2026OpenOrder book
- Set Handicap: Ostapenko (-1.5) vs Yastremska (+1.5)Vol 3.5KLiq 5.2KEnd Mar 27, 2026OpenOrder book
- Ostapenko vs. Yastremska: Set 1 Games O/U 10.5Vol —Liq 241End Mar 27, 2026OpenOrder book