This market refers to the tennis match between Katerina Siniakova and Caty McNally in the Madrid Open, originally scheduled for April 26, 2026 at 5:00AM ET. This market will resolve to 'Katerina Siniakova' if Katerina Siniakova advances against Caty McNally. This market will resolve to 'Caty McNally' if Caty McNally advances against Katerina Siniakova. 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.
Market outcomes
| Madrid Open: Katerina Siniakova vs Caty McNally Set 1 Winner | 0% YES | 100% NO |
| Madrid Open: Katerina Siniakova vs Caty McNally Set 1 O/U 8.5 | 100% YES | 0% NO |
| Madrid Open: Katerina Siniakova vs Caty McNally Set 1 O/U 9.5 | 0% YES | 100% NO |
| Madrid Open: Katerina Siniakova vs Caty McNally Set 1 O/U 10.5 | 0% YES | 100% NO |
| Madrid Open: Katerina Siniakova vs Caty McNally Total Sets: O/U 2.5 | 100% YES | 0% NO |
| Madrid Open: Katerina Siniakova vs Caty McNally Match O/U 23.5 | 100% YES | 0% NO |
| Madrid Open: Katerina Siniakova vs Caty McNally Match O/U 21.5 | 100% YES | 0% NO |
| Madrid Open: Katerina Siniakova vs Caty McNally Set Handicap +/-1.5 | 0% YES | 100% NO |
A prediction market is a real-money contract that pays $1 per YES share if the stated outcome occurs, and $0 if it does not. The current price is therefore the crowd's probability estimate — set by thousands of traders competing in a live order book, not a bookmaker. PolyGram routes your order into the same Polymarket venue, adds an email-first login and USDC deposits, and settles on Polygon within minutes of the result.
This market settles from the official outcome published at https://www.wtatennis.com/scores. A proposer submits the final result to the UMA optimistic oracle on Polygon; the two-hour dispute window closes and payouts clear in USDC.
Resolution is sourced from https://www.wtatennis.com/scores. Settlement is executed by the UMA optimistic oracle on Polygon, with a 2-hour dispute window before payouts clear.
The market is scheduled to close on 3 May 2026. Settlement typically clears within 24 hours after the resolving event, once the UMA optimistic oracle confirms the outcome.