
Madrid Open: Joao Fonseca vs Marin Cilic
Prediction market · Polymarket
Overview
This market refers to the tennis match between Joao Fonseca and Marin Cilic in the Madrid Open, originally scheduled for April 24, 2026 at 5:00AM ET. This market will resolve to 'Joao Fonseca' if Joao Fonseca advances against Marin Cilic. This market will resolve to 'Marin Cilic' if Marin Cilic advances against Joao Fonseca. 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 ATP Tour. A consensus of credible reporting may also be used.
Ticker
atp-fonseca-cilic-2026-04-24
Volume
599
24h volume
599
1w volume
599
Open interest
598
Liquidity
17.7K
Liquidity CLOB
17.7K
Start
Apr 22, 2026
End
May 1, 2026
Status
Active
Access
Restricted
Created
Apr 24, 2026
Resolution source
https://www.atptour.com/en/scores/current
Event ID
406928
Slug
atp-fonseca-cilic-2026-04-24
Markets
1
Raw event data
{
"id": "406928",
"ticker": "atp-fonseca-cilic-2026-04-24",
"slug": "atp-fonseca-cilic-2026-04-24",
"title": "Madrid Open: Joao Fonseca vs Marin Cilic",
"description": "This market refers to the tennis match between Joao Fonseca and Marin Cilic in the Madrid Open, originally scheduled for April 24, 2026 at 5:00AM ET.\n\nThis market will resolve to 'Joao Fonseca' if Joao Fonseca advances against Marin Cilic.\n\nThis market will resolve to 'Marin Cilic' if Marin Cilic advances against Joao Fonseca.\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 ATP Tour. A consensus of credible reporting may also be used.",
"resolutionSource": "https://www.atptour.com/en/scores/current",
"startDate": "2026-04-22T16:17:07.625735Z",
"creationDate": "2026-04-24T09:00:00Z",
"endDate": "2026-05-01T09:00:00Z",
"image": "https://polymarket-upload.s3.us-east-2.amazonaws.com/atp-tour-b4390c4fb8.jpg",
"icon": "https://polymarket-upload.s3.us-east-2.amazonaws.com/atp-tour-b4390c4fb8.jpg",
"active": true,
"closed": false,
"archived": false,
"new": false,
"featured": false,
"restricted": true,
"liquidity": 17699.9718,
"volume": 598.844888,
"openInterest": 597.562888,
"createdAt": "2026-04-22T16:00:13.702064Z",
"updatedAt": "2026-04-23T05:38:56.27729Z",
"competitive": 0.9455370650529501,
"volume24hr": 598.844888,
"volume1wk": 598.844888,
"volume1mo": 598.844888,
"volume1yr": 598.844888,
"enableOrderBook": true,
"liquidityClob": 17699.9718,
"negRisk": false,
"commentCount": 0,
"markets": [
{
"id": "2053441",
"question": "Madrid Open: Joao Fonseca vs Marin Cilic",
"conditionId": "0xb1992ec68c0c7a208d07472237c9d31b5af6cbbe4fd3a441b041d4d52c274e5e",
"slug": "atp-fonseca-cilic-2026-04-24",
"resolutionSource": "https://www.atptour.com/en/scores/current",
"endDate": "2026-05-01T09:00:00Z",
"liquidity": "17699.9718",
"startDate": "2026-04-22T16:09:40.57259Z",
"image": "https://polymarket-upload.s3.us-east-2.amazonaws.com/atp-tour-b4390c4fb8.jpg",
"icon": "https://polymarket-upload.s3.us-east-2.amazonaws.com/atp-tour-b4390c4fb8.jpg",
"description": "This market refers to the tennis match between Joao Fonseca and Marin Cilic in the Madrid Open, originally scheduled for April 24, 2026 at 5:00AM ET.\n\nThis market will resolve to 'Joao Fonseca' if Joao Fonseca advances against Marin Cilic.\n\nThis market will resolve to 'Marin Cilic' if Marin Cilic advances against Joao Fonseca.\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 ATP Tour. A consensus of credible reporting may also be used.",
"outcomes": "[\"Joao Fonseca\", \"Marin Cilic\"]",
"outcomePrices": "[\"0.74\", \"0.26\"]",
"volume": "598.844888",
"active": true,
"closed": false,
"marketMakerAddress": "",
"createdAt": "2026-04-22T16:00:13.894707Z",
"updatedAt": "2026-04-23T05:37:32.93322Z",
"new": false,
"featured": false,
"submitted_by": "0x91430CaD2d3975766499717fA0D66A78D814E5c5",
"archived": false,
"resolvedBy": "0x65070BE91477460D8A7AeEb94ef92fe056C2f2A7",
"restricted": true,
"groupItemThreshold": "0",
"questionID": "0x1b08221c37335ad6107dde00748e42dbbeb7a512752e7054a41f76afa9993f0a",
"enableOrderBook": true,
"orderPriceMinTickSize": 0.01,
"orderMinSize": 5,
"volumeNum": 598.844888,
"liquidityNum": 17699.9718,
"endDateIso": "2026-05-01",
"startDateIso": "2026-04-22",
"hasReviewedDates": true,
"volume24hr": 598.844888,
"volume1wk": 598.844888,
"volume1mo": 598.844888,
"volume1yr": 598.844888,
"gameStartTime": "2026-04-24 09:00:00+00",
"secondsDelay": 3,
"clobTokenIds": "[\"24754215908815821461575358245287691780298139565873697910931296208754627822929\", \"86133083817580489976068514728673746510055596046044918172192359108835274147722\"]",
"umaBond": "500",
"umaReward": "2",
"volume24hrClob": 598.844888,
"volume1wkClob": 598.844888,
"volume1moClob": 598.844888,
"volume1yrClob": 598.844888,
"volumeClob": 598.844888,
"liquidityClob": 17699.9718,
"makerBaseFee": 1000,
"takerBaseFee": 1000,
"customLiveness": 0,
"acceptingOrders": true,
"negRisk": false,
"negRiskRequestID": "",
"ready": false,
"funded": false,
"acceptingOrdersTimestamp": "2026-04-22T16:08:36Z",
"cyom": false,
"competitive": 0.9455370650529501,
"pagerDutyNotificationEnabled": false,
"approved": true,
"rewardsMinSize": 50,
"rewardsMaxSpread": 4.5,
"spread": 0.02,
"lastTradePrice": 0.75,
"bestBid": 0.73,
"bestAsk": 0.75,
"automaticallyActive": true,
"clearBookOnStart": true,
"manualActivation": false,
"negRiskOther": false,
"sportsMarketType": "moneyline",
"umaResolutionStatuses": "[]",
"pendingDeployment": false,
"deploying": false,
"deployingTimestamp": "2026-04-22T16:00:23.575482Z",
"rfqEnabled": false,
"holdingRewardsEnabled": false,
"feesEnabled": true,
"requiresTranslation": false,
"feeType": "sports_fees_v2",
"feeSchedule": {
"exponent": 1,
"rate": 0.03,
"takerOnly": true,
"rebateRate": 0.25
}
}
],
"series": [
{
"id": "10365",
"ticker": "atp",
"slug": "atp",
"title": "ATP",
"seriesType": "single",
"recurrence": "daily",
"image": "",
"icon": "",
"active": true,
"closed": false,
"archived": false,
"featured": false,
"restricted": true,
"createdAt": "2025-10-07T17:08:06.009679Z",
"updatedAt": "2026-04-23T05:39:23.728618Z",
"volume24hr": 8320789.571818,
"volume": 3271613.1868859986,
"liquidity": 10879866.04182,
"commentCount": 2119,
"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": "2026-04-17T20:48:44.296144Z",
"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": "2026-04-17T20:47:16.461062Z",
"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": "2026-04-24",
"startTime": "2026-04-24T09:00:00Z",
"seriesSlug": "atp",
"negRiskAugmented": false,
"pendingDeployment": false,
"deploying": false,
"gameId": 5364328,
"requiresTranslation": false,
"eventMetadata": {
"context_description": "Trader consensus favors Joao Fonseca at 74% implied probability over veteran Marin Cilic in their Madrid Open second-round clash on clay, driven by the 19-year-old Brazilian's surging form and physical edge against the 37-year-old Croat's age and injury history. Fonseca, ranked No. 31 with a career-high No. 24 last year, reached quarterfinals at Monte Carlo and Munich on clay recently, showcasing resilience in comebacks before falling to champion Ben Shelton. Cilic, a 2014 US Open winner using protected ranking, notched his biggest clay win since 2022 by ousting Zizou Bergs in three sets yesterday, but persistent knee issues and an 18-year age gap tilt odds toward Fonseca's baseline power and stamina in this first head-to-head at Masters 1000 level.",
"context_requires_regen": false,
"context_updated_at": "2026-04-23T04:44:05.060Z",
"league": "Madrid Open"
},
"teams": [
{
"id": 147261,
"name": "Joao Fonseca",
"league": "atp",
"record": "0-0",
"logo": "https://polymarket-upload.s3.us-east-2.amazonaws.com/country-flags/bra.png",
"abbreviation": "fonseca",
"createdAt": "2025-10-18T16:00:04.504192Z",
"updatedAt": "2025-11-05T00:20:21.983901Z",
"providerId": 1321364,
"color": "#408040"
},
{
"id": 147210,
"name": "Marin Cilic",
"league": "atp",
"record": "0-0",
"logo": "https://polymarket-upload.s3.us-east-2.amazonaws.com/country-flags/hrv.png",
"abbreviation": "cilic",
"createdAt": "2025-10-17T22:00:03.199795Z",
"updatedAt": "2026-03-15T03:42:52.353406Z",
"providerId": 48793,
"color": "#0000FC"
}
]
}- Madrid Open: Joao Fonseca vs Marin CilicVol 599Liq 17.7KEnd May 1, 2026OpenOrder book