Live prediction market odds for Lois Boisson vs. Peyton Stearns. Compare prices across Kalshi and Polymarket.
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Kalshi / Polymarket
2026-04-21
Lois Boisson vs. Peyton Stearns — WTA Tennis match scheduled for 2026-04-21. Compare live prediction market odds from Kalshi, Polymarket, and more on Prediction Hunt.
Peyton Stearns leads the “Lois Boisson vs. Peyton Stearns” event at 71.5% implied probability, followed by Lois Boisson at 29.3%. A 5.0% cross-platform spread signals an active arbitrage window.
Lois Boisson vs. Peyton Stearns is a prediction market event currently tracked across 2 platforms (Kalshi, Polymarket). Peyton Stearns leads at 72% implied probability, making it the market favorite. Other contenders include Lois Boisson at 29%.
Peyton Stearns currently leads at 72% implied probability. Behind Peyton Stearns, Lois Boisson at 29% are the next closest contenders. The 5.0% cross-platform spread suggested platforms were pricing new information differently, creating potential trading opportunities.
Here are the latest odds across Kalshi, Polymarket: Peyton Stearns: 74¢ on Kalshi, 69¢ on Polymarket. Lois Boisson: 28¢ on Kalshi, 31¢ on Polymarket. The 5.0% spread across platforms highlights where markets disagree — a gap traders can exploit by buying low on one platform and selling high on another.
A price of 72¢ means the market estimates a 72% probability that Peyton Stearns will be the outcome. Buying one share at 72¢ pays out $1.00 if correct — a 39% return — or $0 if wrong. This is the core mechanic of prediction markets: the price directly reflects the crowd's probability estimate.
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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
71.5% avg
