Prediction: Rira Kosaka vs Natsuho Arakawa
Team pages: Rira Kosaka · Natsuho Arakawa
Prediction summary
Winner
Rira Kosaka
Natsuho Arakawa
Estimated games
21.5
Recent form · 10 last
Rira Kosaka
5-5 (W-L)
Natsuho Arakawa
5-5 (W-L)
Our model (Elo) vs Market
Rating Elo · Rira Kosaka 1493 · Natsuho Arakawa 1469
| Rira Kosaka | Natsuho Arakawa | |
|---|---|---|
| Our model | 53% | 47% |
| Market | 49% | 51% |
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 (5.5/match).
- Note: Natsuho Arakawa makes many double faults (4.7/match).
Statistics
| Rira Kosaka | Natsuho Arakawa | |
|---|---|---|
| Win % | 50% | 50% |
| Win % · Hard | 50% (6) | 0% (2) |
| Sets (G-P) | 1.3-1.2 | 1.3-1.2 |
| Games (G-P) | 10.4-11 | 11.2-10.7 |
| Aces | 0.9 | 3.3 |
| Double faults | 5.5 | 4.7 |
| 1st serve % | 53.2% | 64.3% |
| Break % | 48.5% | 45.1% |
Estimated total games (ours)
21.5
Last 10 matches played
Last matches of each player (sets and games). W = win, L = loss. Common opponents to both are in blue.
Rira Kosaka
Swipe the table sideways →
| Date | Opponent | Sets | Games | Res. |
|---|---|---|---|---|
| 10/09 | Kisa Yoshioka W15 Yeongwol |
1-2 | 12-17 | L |
| 09/09 | Hee Won Ju W15 Yeongwol |
2-0 | 13-7 | W |
| 07/09 | Eun Ji Lee W15 Yeongwol |
2-1 | 9-9 | W |
| 16/07 | Junhan Zhang W15 Luan · ~Hard |
0-2 | 5-12 | L |
| 14/07 | Liuyan An W15 Luan · ~Hard |
2-0 | 12-6 | W |
| 13/07 | Xin Tong Wang W15 Luan · ~Hard |
2-1 | 10-10 | W |
| 08/07 | Seo Yun Choi W15 Luan · ~Hard |
0-2 | 5-12 | L |
| 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 |
Natsuho Arakawa
Swipe the table sideways →
| Date | Opponent | Sets | Games | Res. |
|---|---|---|---|---|
| 15/09 | Remika Ohashi W35 Kyoto |
1-2 | 9-11 | L |
| 02/09 | Clarissa Blomqvist W15 Monastir · ~Hard |
0-2 | 5-12 | L |
| 26/08 | Eloise Newberry W15 Monastir · ~Hard |
1-2 | 12-15 | L |
| 31/07 | Amy Stevens W15 Brisbane |
1-2 | 16-14 | L |
| 30/07 | Ya-Yi Yang W15 Brisbane |
2-0 | 13-9 | W |
| 29/07 | Julie Adele Bedard W15 Brisbane |
2-0 | 12-3 | W |
| 26/07 | Destanee Aiava W15 Brisbane |
0-2 | 3-12 | L |
| 25/07 | Chia Yi Tsao W15 Brisbane |
2-1 | 14-12 | W |
| 24/07 | Maiko Uchijima W15 Brisbane |
2-0 | 12-4 | W |
| 23/07 | Belle Thompson W15 Brisbane |
2-1 | 16-15 | W |
Frequently asked questions
Who is the favourite in Rira Kosaka vs Natsuho Arakawa?
Our model gives 51% to Rira Kosaka, 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.

