Live prediction market odds for Sofia Costoulas vs. Hanne Vandewinkel. Compare prices across Kalshi and Polymarket.
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MARKET RESOLVEDKalshi / Polymarket
Resolved 2026-03-31
This market resolved on 2026-03-31. Hanne Vandewinkel was the officially declared outcome. Prior to resolution, the market peaked at 72%.
Sofia Costoulas vs. Hanne Vandewinkel — WTA Tennis match held on 2026-03-31. Review the historical prediction market odds from Kalshi, Polymarket, and more on Prediction Hunt.
| Candidate |  |  |
|---|---|---|
Hanne VandewinkelWINNER | 99% | 44% |
Sofia Costoulas | 1% | 56% |
Sofia Costoulas vs. Hanne Vandewinkel was a prediction market event tracked across 2 platforms (Kalshi, Polymarket). Hanne Vandewinkel led the market at 72% implied probability before resolution. Other contenders include Sofia Costoulas at 29%.
Hanne Vandewinkel held the lead at 72% implied probability heading into resolution. Behind Hanne Vandewinkel, Sofia Costoulas at 29% were the next closest contenders. The 55.0% cross-platform spread suggested platforms were pricing new information differently, creating potential trading opportunities.
Here were the closing odds across Kalshi, Polymarket: Hanne Vandewinkel: 99¢ on Kalshi, 44¢ on Polymarket. Sofia Costoulas: 1¢ on Kalshi, 56¢ on Polymarket. The 55.0% spread across platforms highlights where markets disagreed — a gap traders can exploit by buying low on one platform and selling high on another.
A price of 72¢ meant the market estimated a 72% chance that Hanne Vandewinkel would be the outcome. Traders who bought at 72¢ and held through resolution received $1.00 per share — a 39% return on their position. Those on the wrong side received $0.
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Hanne Vandewinkel
71.5% avg
Official settlement criteria, resolution sources, and edge cases across Kalshi and Polymarket.
KalshiIf Hanne Vandewinkel wins the Vandewinkel vs Costoulas professional tennis match in the 2026 WTA Bogota Round Of 32 after a ball has been played, then the market resolves to Yes.
The following market refers to the Vandewinkel vs Costoulas professional tennis match in the 2026 WTA Bogota Round Of 32 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 Hanne Vandewinkel and Sofia Costoulas in the Copa Colsanitas, scheduled for March 30 2026. This market will resolve to "Vandewinkel" if Hanne Vandewinkel wins by 2 or more sets than Sofia Costoulas, based on the final completed score. Otherwise, it will resolve to "Costoulas." If 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. Resolution will be based on official WTA results.
