
Madrid Open: Iga Swiatek vs Ann Li
Prediction market · Polymarket
Overview
This market refers to the tennis match between Iga Swiatek and Ann Li in the Madrid Open, originally scheduled for April 25, 2026 at 5:00AM ET. This market will resolve to 'Iga Swiatek' if Iga Swiatek advances against Ann Li. This market will resolve to 'Ann Li' if Ann Li advances against Iga Swiatek. 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-swiatek-annli-2026-04-25
Volume
528.4K
24h volume
527.7K
1w volume
528.4K
Open interest
206.8K
Liquidity
—
Start
Apr 23, 2026
End
May 2, 2026
Status
Closed
Access
Restricted
Created
Apr 25, 2026
Resolution source
https://www.wtatennis.com/scores
Event ID
411158
Slug
wta-swiatek-annli-2026-04-25
Markets
9
Raw event data
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"title": "Madrid Open: Iga Swiatek vs Ann Li",
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"description": "This market refers to the tennis match between Iga Swiatek and Ann Li in the Madrid Open, originally scheduled for April 25, 2026 at 5:00AM ET.\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.",
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"active": true,
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{
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"question": "Swiatek vs. Li: Set 1 Games O/U 8.5",
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"resolutionSource": "https://www.wtatennis.com/scores",
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"description": "This market refers to the tennis match between Iga Swiatek and Ann Li in the Madrid Open, originally scheduled for April 25, 2026 at 5:00AM ET.\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.",
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"outcomePrices": "[\"1\", \"0\"]",
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{
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"question": "Set 1 Winner: Swiatek vs Li",
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"question": "Swiatek vs. Li: Match O/U 21.5",
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"eventDate": "2026-04-25",
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"score": "6-7(4-7), 6-2, 0-3",
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"context_description": "No. 4 seed Iga Swiatek, a clay-court powerhouse with prior Madrid Open titles and an 87% win rate on the surface, entered her third-round matchup against No. 31 seed Ann Li as the clear trader consensus favorite despite a subpar 2026 hardcourt record of around 12-6 and recent coaching changes with Francisco Roig. Li arrived with momentum from recent upsets, including straight-set wins over Daria Kasatkina and Kamilla Rakhimova in Rouen, plus victories against Leylah Fernandez in Doha. The match turned dramatic as Li seized the first set via tiebreak, prompting Swiatek to call for the trainer amid visible struggles before retiring due to gastrointestinal illness at 0-2 in the third, advancing Li to the last 16.",
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"id": 183136,
"name": "Iga Swiatek",
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"abbreviation": "swiatek",
"alias": "I. Swiatek",
"createdAt": "2025-10-30T04:00:01.947083Z",
"updatedAt": "2026-04-24T15:34:55.41401Z",
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{
"id": 147324,
"name": "Ann Li",
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"abbreviation": "annli",
"alias": "A. Li",
"createdAt": "2025-10-20T16:00:02.032179Z",
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}- Swiatek vs. Li: Set 1 Games O/U 8.5Vol 938Liq 0End May 2, 2026Closed
- Swiatek vs. Li: Set 1 Games O/U 9.5Vol 130Liq 0End May 2, 2026Closed
- Swiatek vs. Li: Set 1 Games O/U 10.5Vol 130Liq 0End May 2, 2026Closed
- Swiatek vs. Li: Match O/U 22.5Vol 1.2KLiq 0End May 2, 2026Closed
- Swiatek vs. Li: Match O/U 21.5Vol 690Liq 0End May 2, 2026Closed
- Swiatek vs. Li: Match O/U 23.5Vol 549Liq 0End May 2, 2026Closed
- Iga Swiatek vs. Ann Li: Total Sets O/U 2.5Vol 220Liq 0End May 2, 2026Closed
- Madrid Open: Iga Swiatek vs Ann LiVol 523.7KLiq —End May 2, 2026Closed
- Set 1 Winner: Swiatek vs LiVol 829Liq 0End May 2, 2026Closed