Katie Boulter vs Katerina Siniakova Prediction & Betting Tips - Japan Women's Open
WTA - Japan Women's Open
New customers only | Commercial content | 18+ age limit | T&Cs apply
by Daniel Ngulu | in Tennis Predictions
Eighth-seeded Katie Boulter and unseeded Katerina Siniakova will meet in the semi-finals of the Japan Open. This will mark their first meeting of the season and second overall. Like their first encounter, our prediction backs this for over 2.5 sets.
Katie Boulter defeated Siniakova when they met last season on a clay surface in Madrid. With a head-to-head advantage in this fixture, she will fancy her chances of making the championship match even more.
Boulter, who won this year’s Transylvanian Open, has been in fine form in Osaka. The Brit has dropped just one set in three rounds.
Her only three-set match was in the last round as she overpowered Antonia Ruzic after dropping the opening set. Boulter has jumped 10 places to 48th in the live ranking.
Katerina Siniakova has also made a significant leap in the live ranking after reaching the last four. The Czech star, who is seeking her first tour title in three years, has catapulted a massive 19 places to 67th.
Siniakova defeated the qualifier Mary Stoiana in straight sets in the quarter-finals, her second successive 2-0 victory this week. The 30-year-old enjoys competing in Asia, which is where half of the 10 tour finals she has appeared in have come.
Limited Offer. Currently at Stake
Katie Boulter v Katerina Siniakova Best Betting Odds
| Bookmaker | 1 | 2 | Bonus |
|---|---|---|---|
|
2.31 | 1.55 |
|
|
2.38 | 1.58 |
|
|
2.38 | 1.58 |
|
|
2.38 | 1.58 |
|
|
2.38 | 1.57 |
|
Pre-register for our Member Area: win €500!
Who will win the Katie Boulter vs Katerina Siniakova Tennis game?
Our prediction for the Katie Boulter vs Katerina Siniakova match is: more than 2.5 sets.
The best winner predictions and betting odds for the Katie Boulter vs Katerina Siniakova game on 24/10/2026 of the current Japan Women's Open season:
- Katie Boulter has a 54.21% chance to win against Katerina Siniakova according to Betway ⭐ with the odds of 2.4.
- Katerina Siniakova has a 45.79% probability of winning facing Katie Boulter ⭐ with odds of 1.6 at Shangrila.
Katie Boulter vs Katerina Siniakova Best Prediction and Odds
Based on the bookmaker's betting lines in this match, Katie Boulter has a 54.21 % chance to win.
| Prediction | Chance to win |
|---|---|
| Katie Boulter | 54.21 % |
| Katerina Siniakova | 45.79 % |
Katie Boulter vs Katerina Siniakova Form
Katie Boulter and Katerina Siniakova Last Matches
4/6 (67%)
2/6 (33%)
23 Oct 2026 - Japan Women's Open
21 Oct 2026 - Japan Women's Open
19 Oct 2026 - Japan Women's Open
13 Oct 2026 - WTA Wuhan Open
2 Oct 2026 - WTA China Open
30 Sept 2026 - WTA China Open
3/6 (50%)
3/6 (50%)
23 Oct 2026 - Japan Women's Open
22 Oct 2026 - Japan Women's Open
12 Oct 2026 - WTA Wuhan Open
3 Oct 2026 - WTA China Open
1 Oct 2026 - WTA China Open
3 Sept 2026 - WTA US Open
Katie Boulter vs Katerina Siniakova Stats: Head to Head (H2H)
100 %
0 %
22 Apr 2025 - WTA Mutua Madrid Open
Katie Boulter - Katerina Siniakova Key Points
- Six of Siniakova's last 10 opponents won at least one set.
- Over 2.5 sets were played in the past meeting between Siniakova and Boulter.
- Boulter has relinquished at least one set seven times in her previous 10 matches.
- Siniakova and Boulter have both won over 190 hardcourt matches in their careers.
Limited Offer. Currently at Stake
Our Katie Boulter vs Katerina Siniakova Prediction
Our prediction for Katie Boulter v Katerina Siniakova is for the match to produce more than 2.5 sets. A decider was required to separate these two when they last met. Though that showdown was on a clay court, we still expect the same on a hard court.
This is because these two are hard court specialists who have emerged as strong candidates for the title in Osaka. Boulter and Siniakova have won exactly 192 duels each on hard courts in their careers.
Get a retirement guarantee for the Katie Boulter vs. Katerina Siniakova game!
When you place a bet on the match between Katie Boulter and Katerina Siniakova you can get a retirement guarantee with bet365. This means that your bet will be paid out as a winner if your opponent retires.
It does not matter whether you bet on Katie Boulter or Katerina Siniakova, if your opponent has to retire from the match with an injury, you will get paid as a winner!
All tips are fully researched and given in good faith, but profits cannot be guaranteed.
