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| Outcome | Chance | 24h | 1 week | Bid · Ask | 24h volume | Ends |
|---|---|---|---|---|---|---|
| Japan Women's Open: Katie Boulter vs Himeno Sakatsume | 100% | +37 pts | — | >99¢ · 100¢ (<1¢) | — | in 1d |
| Completed Match | 100% | +44 pts | — | 99¢ · 100¢ (1¢) | — | in 1d |
| Japan Women's Open: Katie Boulter vs Himeno Sakatsume Set 2 Winner | 100% | +42 pts | — | >99¢ · 100¢ (<1¢) | — | in 1d |
| Japan Women's Open: Katie Boulter vs Himeno Sakatsume Set 1 Winner | 100% | +40 pts | — | >99¢ · 100¢ (<1¢) | — | in 1d |
| Japan Women's Open: Katie Boulter vs Himeno Sakatsume Set Handicap +/-1.5 | 100% | +59 pts | — | 99¢ · 100¢ (1¢) | — | in 1d |
| Japan Women's Open: Katie Boulter vs Himeno Sakatsume Game Spread +/-3.5 | 100% | +52 pts | — | >99¢ · 100¢ (<1¢) | — | in 1d |
| Japan Women's Open: Katie Boulter vs Himeno Sakatsume Total Sets: O/U 2.5 | 0% | −38 pts | — | — · <1¢ | — | in 1d |
| Japan Women's Open: Katie Boulter vs Himeno Sakatsume Match O/U 22.5 | 0% | −43 pts | — | — · <1¢ | — | in 1d |
| Japan Women's Open: Katie Boulter vs Himeno Sakatsume Set 1 O/U 8.5 | 100% | +30 pts | — | >99¢ · 100¢ (<1¢) | — | in 1d |
| Japan Women's Open: Katie Boulter vs Himeno Sakatsume Set 1 O/U 9.5 | 0% | −44 pts | — | — · <1¢ | — | in 1d |
| Japan Women's Open: Katie Boulter vs Himeno Sakatsume Set 1 O/U 10.5 | 0% | −24 pts | — | — · <1¢ | — | in 1d |
| Japan Women's Open: Katie Boulter vs Himeno Sakatsume Set 2 O/U 8.5 | 0% | −50 pts | — | — · <1¢ | — | in 1d |
| Japan Women's Open: Katie Boulter vs Himeno Sakatsume Set 2 O/U 9.5 | 0% | −50 pts | — | — · <1¢ | — | in 1d |
| Japan Women's Open: Katie Boulter vs Himeno Sakatsume Set 2 O/U 10.5 | 0% | −50 pts | — | — · <1¢ | — | in 1d |
| Japan Women's Open: Katie Boulter vs Himeno Sakatsume Match O/U 21.5 | 0% | −49 pts | — | — · <1¢ | — | in 1d |
| Japan Women's Open: Katie Boulter vs Himeno Sakatsume Match O/U 23.5 | 0% | −39 pts | — | — · <1¢ | — | in 1d |
| When | Trader | Outcome | Bet | Size | P&L now | Insider |
|---|---|---|---|---|---|---|
| 4d | muchova19 | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | SellKatie Boulter>99¢ | $4,995 | −$5 −0.1% | — |
| 4d | muchova19 | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | BuyKatie Boulter96¢ → 100¢ | $4,800 | +$200 +4.2% | 4 |
| 5d | Wide-Swordfish-Latitude2 fills | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | SellKatie Boulter76¢ → 100¢ | $4,519 | −$1,408 −31% | — |
| 5d | Wide-Swordfish-Latitude2 fills | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | BuyKatie Boulter78¢ → 100¢ | $4,619 | +$1,308 +28% | 8 |
| 5d | Evil-Liquor | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | SellKatie Boulter92¢ → 100¢ | $1,349 | −$111 −8.2% | — |
| 5d | robustmst4 fills | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | SellKatie Boulter92¢ → 100¢ | $66,864 | −$5,915 −8.8% | — |
| 5d | swy01 | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | SellKatie Boulter94¢ → 100¢ | $3,604 | −$230 −6.4% | — |
| 5d | Favorable-Pepper-Brushing | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | BuyKatie Boulter95¢ → 100¢ | $1,366 | +$67 +4.9% | 4 |
| 5d | swy01 | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | BuyKatie Boulter96¢ → 100¢ | $3,671 | +$154 +4.2% | 4 |
| 5d | austr | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | BuyKatie Boulter89¢ → 100¢ | $1,000 | +$126 +13% | 5 |
| 5d | Salad1 | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | BuyHimeno Sakatsume18¢ → 0¢ | $1,679 | −$1,679 −100% | 6 |
| 5d | robustmst2 fills | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | BuyKatie Boulter69¢ → 100¢ | $50,000 | +$22,820 +46% | 6 |
| 5d | PreserveGain | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | BuyKatie Boulter70¢ → 100¢ | $3,360 | +$1,440 +43% | 6 |
| 5d | ferrariChampions20263 fills | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | BuyKatie Boulter68¢ → 100¢ | $12,124 | +$5,713 +47% | 6 |
| 5d |  RN1 | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | BuyKatie Boulter68¢ → 100¢ | $1,034 | +$486 +47% | 6 |
| 5d | UpTheBlues | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | BuyHimeno Sakatsume53¢ → 0¢ | $1,887 | −$1,887 −100% | 6 |
| 5d | Scornful-Gym-Retreat | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | BuyHimeno Sakatsume51¢ → 0¢ | $1,698 | −$1,698 −100% | 6 |
| 5d | 0x2023x | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | BuyKatie Boulter52¢ → 100¢ | $1,040 | +$960 +92% | 6 |
| 5d | ferrariChampions2026 | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | BuyHimeno Sakatsume51¢ → 0¢ | $2,632 | −$2,632 −100% | 6 |
| 5d |  RollAwayTheDew | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | BuyKatie Boulter52¢ → 100¢ | $1,098 | +$1,013 +92% | 6 |
| 5d | Wretched-Mat | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | BuyHimeno Sakatsume44¢ → 0¢ | $1,558 | −$1,558 −100% | 6 |
| 5d |  tradecraft | Japan Women's Open: Katie Boulter vs Himeno Sakatsume | BuyKatie Boulter62¢ → 100¢ | $1,848 | +$1,152 +62% | 6 |
This market refers to the tennis match between Katie Boulter and Himeno Sakatsume in the Japan Women's Open, originally scheduled for October 18, 2026 at 9:00PM ET. This market will resolve to 'Katie Boulter' if Katie Boulter advances against Himeno Sakatsume. This market will resolve to 'Himeno Sakatsume' if Himeno Sakatsume 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 1, 2026, 11:59 PM ET (14 days after the scheduled start), 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.
Sources: Polymarket's Gamma API, its CLOB price history and its Data API, read every two minutes. Prices are each outcome's Yes price, which is the market's probability: 100¢ for Japan Women's Open: Katie Boulter vs Himeno Sakatsume means the market gives it about 100%.