Prediction: Seo Yun Choi vs Rira Kosaka
Our model (Elo on hard, opponent-adjusted) gives 52% to Seo Yun Choi; the market gives 59% to Seo Yun Choi (odds 1.57).
Over their last 10 matches, Seo Yun Choi sits at 6-4 (W-L), while Rira Kosaka arrives on a 5-5 run.
| Seo Yun Choi | Rira Kosaka | |
|---|---|---|
| Our model | 52% | 48% |
| Market | 59% | 41% |
The bar above blends our model with the market: where our probability diverges most from the odds is where the model sees the widest gap.
Match keys
- Note: Rira Kosaka makes many double faults (6/match).
Statistics
| Seo Yun Choi | Rira Kosaka | |
|---|---|---|
| Win % | 40% | 40% |
| Win % · Hard | 20% (5) | 38% (8) |
| Sets (G-P) | 1-1.3 | 1.1-1.3 |
| Games (G-P) | 10.1-10 | 11-11.2 |
| Aces | 1 | 1.1 |
| Double faults | 1.5 | 6 |
| 1st serve % | 56.2% | 56.4% |
| Break % | 49.8% | 51.1% |
Last 10 matches played
Last matches of each player (sets and games). W = win, L = loss. Common opponents to both are in blue.
Seo Yun Choi
Swipe the table sideways →
| Date | Opponent | Sets | Games | Res. |
|---|---|---|---|---|
| 07/07 | Jasmine Li W15 Luan · ~Hard |
2-0 | 12-3 | W |
| 25/06 | Miho Kuramochi W15 Sapporo |
0-2 | 7-13 | L |
| 24/06 | Aoi Watanabe W15 Sapporo |
2-1 | 14-7 | W |
| 18/06 | Ayumi Miyamoto W15 Sapporo |
0-2 | 9-13 | L |
| 17/06 | Riyo Yoshida W15 Sapporo |
2-0 | 12-5 | W |
| 16/06 | Yui Ohwaki W15 Sapporo |
2-0 | 12-4 | W |
| 20/05 | BoYoung Jeong W35 Changwon · ~Hard |
0-2 | 5-12 | L |
| 12/05 | Amy Zhu W35 Andong · ~Hard |
0-2 | 6-12 | L |
| 06/05 | Hanna Chang W35 Changwon · ~Hard |
1-2 | 14-17 | L |
| 30/04 | Rinko Matsuda W35 Goyang · ~Hard |
1-2 | 10-14 | L |
Rira Kosaka
Swipe the table sideways →
| Date | Opponent | Sets | Games | Res. |
|---|---|---|---|---|
| 07/07 | Salakthip Ounmuang W15 Luan · ~Hard |
2-0 | 13-10 | W |
| 30/06 | Yui Ohwaki W15 Maanshan · ~Hard |
1-2 | 10-10 | L |
| 25/06 | Ying Zhang W15 Sapporo |
1-2 | 15-17 | L |
| 24/06 | Mutsumi Uemura W15 Sapporo |
2-0 | 12-6 | W |
| 13/05 | Gaeul Jang W35 Andong · ~Hard |
0-2 | 5-12 | L |
| 05/05 | Moeka Miyata W35 Fukuoka · ~Hard |
0-2 | 9-13 | L |
| 22/04 | Elena Micic W35 Miyazaki · ~Hard |
1-2 | 13-14 | L |
| 16/08 | Shiho Tsujioka UTR Pro Yokohama Women · Hard |
0-2 | 3-12 | L |
| 15/08 | Natsuki Yamagami UTR Pro Yokohama Women · Hard |
2-1 | 18-16 | W |
| 14/08 | Sasha Sakura Stula UTR Pro Yokohama Women · Hard |
2-0 | 12-2 | W |
Frequently asked questions
Who is the favourite in Seo Yun Choi vs Rira Kosaka?
Our model gives 56% to Seo Yun Choi, using surface Elo on hard.
What is the prediction based on?
On an Elo model by surface (hard) adjusted for opponent quality, compared with the market odds.

