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Japan Women's Open: Katie Boulter vs Himeno Sakatsume
The last odds before it closed
How the odds have moved
Katie Boulter: 93% on Oct 20, >99% now.
Each outcome's chance over time on Polymarket. The dots along the bottom are headlines about its subject: point at one to read it.
Every outcome
| Outcome | Chance | Day | Bid | Ask | Pays | Traded |
|---|---|---|---|---|---|---|
| Katie Boulter | >99% | ▲ 37 | 100¢ | 100¢ | $414K | |
| Himeno Sakatsume | <1% | ▼ 37 | 0¢ | 0¢ | $414K |
"Pays" is what a $1 stake returns if that outcome happens, at the price shown (before any fees). Bid and ask are the best prices to sell and buy "Yes".
The news: Katie Boulter, Himeno Sakatsume
Search ›- Kateřina Siniaková beats Katie Boulter 6-1, 6-4 in Osaka to set up Japan Open final against Ashlyn KruegerSiniaková beats Boulter to reach Japan Open final in Osaka KarloBag.eu Kateřina Siniaková stops Katie Boulter in Osaka and reaches final against Ashlyn Krueger Czech tennis player Kateřina Siniaková advanced to the final of the Kinoshita…
- Katie Boulter’s Japan Open run halted after reclaiming British No 1Katerina Siniakova, the 12-time grand slam doubles winner, will play in the 11th singles final of her career on Sunday Katie Boulter fell to a 6-1 6-4 defeat to Katerina Siniakova in the semi-finals of the Japan Open. Boulter had reclaimed…
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Katie Boulter set to be reinstated as British No.1 following Japan Open semi-final runKatie Boulter reclaims the British No.1 ranking after beating Antonia Ruzic to reach the Japan Open semi-finals, with a rankings rise ahead. Tennis Up To Date - Do Not Process My Personal Information If you wish to opt-out of the sale… -
New British number one Boulter loses Japan semi-finalKatie Boulter's last WTA title came at the Ostrava Open in February Katie Boulter has lost in the Japan Open semi-finals, in her first match since reclaiming the British number one spot from Sonny Kartal. Kartal moved above Boulter in the… -
Katie Boulter reacts after reaching her first WTA Tour semi-final in four monthsKatie Boulter has continued her impressive tournament at the Japan Open after reaching the semi-finals. Boulter began the 2026 season ranked outside the top 100, and was even as low as world number 120 in February. Since then, Boulter has… - Katie Boulter reclaims British No 1 from Sonay Kartal with Japan Open progressBoulter produced a comeback from a set and a break down to beat the world No 91 Ruzic in the quarter-finals in Osaka Katie Boulter has reclaimed the British No 1 ranking from Sonay Kartal after advancing to the semi-finals of the Japan…
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Boulter cruises past Golubic to reach Japan Open quarter-finalsOSAKA: Katie Boulter stormed into the quarter-finals of the Japan Open after beating Switzerland’s Viktorija Golubic 6-2, 6-1 in less than an hour here at Utsubo Tennis Center on Wednesday. The British number two produced a dominant… -
Boulter reclaims British number one ranking with Japan Open comebackOSAKA: Katie Boulter reclaimed the British number one ranking after battling back from a set down to defeat Croatia’s Antonia Ruzic in the Japan Open quarter-finals here at the Utsubo Tennis Center on Thursday. The eighth seed recovered… -
WTA roundup: No. 1 Elena Rybakina chasing 4th title of '26World No. 1 Elena Rybakina will play for her fourth title of the season Sunday at the Ningbo Open in China, opposing Canada's Leylah Fernandez. Both players posted 6-3, 7-5 victories on Saturday. Top-seeded Rybakina, from Kazakhstan, beat… - WTA roundup: No. 1 Rybakina chasing 4th title of '26World No. 1 Elena Rybakina will play for her fourth title of the season Sunday at the Ningbo Open in China, opposing Canada’s Leylah Fernandez. Both players posted 6-3, 7-5 victories on Saturday. Top-seeded Rybakina, from Kazakhstan, beat…
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Meet the 17-year-old British player who won the junior US Open and has just been handed a wildcard at the Tokyo OpenBritish tennis is in a strange place at the moment, with so much pain and heartache, but also plenty of cause for optimism as well. The injury turmoil of Jack Draper and Emma Raducanu, which has plagued both of their 2026 campaigns… -
Boulter into Japan semis and back as British No 1Katie Boulter is through to her third WTA semi-final of the 2026 season Katie Boulter has reclaimed the British number one ranking after fighting back to beat Antonia Ruzic in three sets in the quarter-finals of the Japan Open. The…
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Prediction-market prices are what traders pay for each outcome on Kalshi, Polymarket, ForecastEx and Crypto.com, read as the market's implied chance. They are not forecasts by 4Conservative, can move fast and can be wrong; they are read every few minutes and may be delayed. Money traded on Kalshi and ForecastEx is estimated from contracts at their price. News comes from the 4Conservative index; prices of stocks, rates and coins from 4Conservative Finance. Nothing here is betting, financial or investment advice. Terms of use. How to use Predictions