Japan Women's Open: Katie Boulter vs Katerina Siniakova — odds by venue
| Outcome | Polymarket | Kalshi | Best price |
|---|---|---|---|
| Japan Women's Open: Katie Boulter vs Katerina Siniakova | 41% | 40% | 40% on Kalshi |
Venues
- Polymarket: Volume $4.9K · Liquidity $80.7K · Price time —
- Kalshi: Volume $130 · Liquidity $130 · Price time —
Resolution rules
Polymarket
This market refers to the tennis match between Katie Boulter and Katerina Siniakova in the Japan Women's Open, originally scheduled for October 24, 2026 at 12:30AM ET. This market will resolve to 'Katie Boulter' if Katie Boulter advances against Katerina Siniakova. This market will resolve to 'Katerina Siniakova' if Katerina Siniakova advances against Katie Boulter. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 7, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50. If the match begins but…
Kalshi
If Katie Boulter wins the Boulter vs Siniakova professional tennis match in the 2026 WTA Osaka Semifinal after a ball has been played, then the market resolves to Yes. The following market refers to the Boulter vs Siniakova professional tennis match in the 2026 WTA Osaka Semifinal 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 w…