Tennis · W35 Wagga Wagga · 07/10, 04:00
Prediction: Haruka Kaji vs Rira Kosaka
Team pages: Haruka Kaji · Rira Kosaka
Prediction summary
Winner
Haruka Kaji
Rira Kosaka
Estimated games
21.1
Recent form · 10 last
Haruka Kaji
5-5 (W-L)
Rira Kosaka
4-6 (W-L)
Our model (Elo) vs Market
Rating Elo · Haruka Kaji 1465 · Rira Kosaka 1522
| Haruka Kaji | Rira Kosaka | |
|---|---|---|
| Our model | 42% | 58% |
| Market | 88% | 12% |
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
- Our model (surface Elo, opponent-adjusted) favours Rira Kosaka (rating 1465 vs 1522).
- Note: Rira Kosaka makes many double faults (4.5/match).
Statistics
| Haruka Kaji | Rira Kosaka | |
|---|---|---|
| Win % | 40% | 60% |
| Win % · Hard | 0% (2) | 50% (2) |
| Sets (G-P) | 1.1-1.3 | 1.4-1 |
| Games (G-P) | 10.3-11.5 | 10.6-10.3 |
| Aces | 0.8 | 0.7 |
| Double faults | 2.7 | 4.5 |
| 1st serve % | 55% | 58% |
| Break % | 56.1% | 47.5% |
Estimated total games (ours)
21.1
Last 10 matches played
Last matches of each player (sets and games). W = win, L = loss. Common opponents to both are in blue.
Haruka Kaji
Swipe the table sideways →
| Date | Opponent | Sets | Games | Res. |
|---|---|---|---|---|
| 28/09 | Emerson Jones WTA Jingshan · Hard |
0-2 | 6-12 | L |
| 19/09 | Darya Astakhova WTA Seoul · Hard |
1-2 | 11-18 | L |
| 10/09 | Alexandra Shubladze W50 Guiyang |
0-2 | 4-12 | L |
| 08/09 | Anastasia Kulikova W50 Guiyang |
2-0 | 12-4 | W |
| 03/09 | Han Shi W75 Tianjin |
1-2 | 11-16 | L |
| 02/09 | Yufei Ren W75 Tianjin |
2-0 | 13-6 | W |
| 27/08 | Elena Milovanovic W50 Kursumlijska Banja · ~Clay |
1-2 | 13-15 | L |
| 25/08 | Amandine Hesse W50 Kursumlijska Banja · ~Clay |
2-0 | 13-10 | W |
| 20/08 | Lidia Encheva W75 Kursumlijska Banja · ~Clay |
0-2 | 4-12 | L |
| 18/08 | Sakura Hosogi W75 Kursumlijska Banja · ~Clay |
2-1 | 16-10 | W |
Rira Kosaka
Swipe the table sideways →
| Date | Opponent | Sets | Games | Res. |
|---|---|---|---|---|
| 06/10 | Sera Nishimoto W35 Wagga Wagga |
2-0 | 12-8 | W |
| 30/09 | Haruna Arakawa W35 Wagga Wagga |
1-2 | 12-17 | L |
| 29/09 | Remika Ohashi W35 Wagga Wagga |
2-0 | 12-4 | W |
| 22/09 | Sayaka Ishii W50 Nanao |
0-2 | 4-12 | L |
| 21/09 | Natsuho Arakawa W50 Nanao |
2-1 | 15-11 | W |
| 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 |
Frequently asked questions
Who is the favourite in Haruka Kaji vs Rira Kosaka?
Our model gives 67% to Haruka Kaji, 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.

