Live prediction market odds for Lois Boisson vs. Peyton Stearns. Compare prices across Kalshi and Polymarket.
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MARKET RESOLVEDKalshi / Polymarket
Resolved 2026-04-21
This market resolved on 2026-04-21. Peyton Stearns was the officially declared outcome. Prior to resolution, the market peaked at 99%.
Lois Boisson vs. Peyton Stearns — WTA Tennis match held on 2026-04-21. Review the historical prediction market odds from Kalshi, Polymarket, and more on Prediction Hunt.
| Candidate |  |  |
|---|---|---|
Peyton StearnsWINNER | 99% | 100% |
Lois Boisson | 1% | 0% |
Lois Boisson vs. Peyton Stearns was a prediction market event tracked across 2 platforms (Kalshi, Polymarket). Peyton Stearns led the market at 99% implied probability before resolution. Other contenders include Lois Boisson at 1%.
Peyton Stearns held the lead at 99% implied probability heading into resolution. Behind Peyton Stearns, Lois Boisson at 1% were the next closest contenders. Platforms were tightly aligned at a 0.9% spread, suggesting broad consensus on the odds.
Here were the closing odds across Kalshi, Polymarket: Peyton Stearns: 99¢ on Kalshi, 100¢ on Polymarket. Lois Boisson: 1¢ on Kalshi, 0¢ on Polymarket. Platforms were tightly aligned at a 0.9% spread, leaving little room for cross-platform arbitrage.
A price of 99¢ meant the market estimated a 99% chance that Peyton Stearns would be the outcome. Traders who bought at 99¢ and held through resolution received $1.00 per share — a 1% return on their position. Those on the wrong side received $0.
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Official settlement criteria, resolution sources, and edge cases across Kalshi and Polymarket.
KalshiIf Peyton Stearns wins the Stearns vs Boisson professional tennis match in the 2026 WTA Madrid Round Of 128 after a ball has been played, then the market resolves to Yes.
The following market refers to the Stearns vs Boisson professional tennis match in the 2026 WTA Madrid Round Of 128 after a ball has been played. If the match does not occur (signaled by a ball being played) due to a player injury, walkover, forfeiture, or any other cancellation (all before the match starts), the market will resolve to a fair price in accordance with the rules. If this match is postponed or delayed, the market will remain open and close after the rescheduled match has finished (within two weeks).
PolymarketThis market refers to the tennis match between Peyton Stearns and Lois Boisson in the Madrid Open, originally scheduled for April 21, 2026 at 5:00AM ET. This market will resolve to 'Peyton Stearns' if Peyton Stearns advances against Lois Boisson. This market will resolve to 'Lois Boisson' if Lois Boisson advances against Peyton Stearns. 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.
Peyton Stearns
99.5% avg
