Naomi Osaka def. Wakana Sonobe
6-0 6-4
Naomi Osaka defeated Wakana Sonobe 6-0 6-4 in the 2025 Japan Women's Open first round on hard courts on October 13, 2025.
Match Information
Match Statistics
| Stat | Naomi Osaka | Wakana Sonobe |
|---|---|---|
| Aces | 8 | 1 |
| Double faults | 1 | 3 |
| First serve % | 46.0% | 58.0% |
| First serve points won % | 83.0% | 53.0% |
| Second serve points won % | 71.0% | 41.0% |
| Break points saved % | 67.0% | 62.0% |
| Break points converted % | 38.0% | 33.0% |
| Service points won % | 77.0% | 48.0% |
| Return points won % | 52.0% | 23.0% |
| Total points won % | 62.0% | 38.0% |
| Serve rating | 129 | 90 |
| Return rating | 98 | 52 |
Win Probability
How the market's view of each player's chances changed through the match.
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Player Comparison
| Field | Naomi Osaka | Wakana Sonobe |
|---|---|---|
| Country | JPN | JPN |
| Birth date | Oct 16, 1997 | Jan 17, 2008 |
| Age | 27 | 17 |
| Height | 180 cm | — |
| Handedness | Right-Handed | Left-Handed |
| Backhand style | Two-Handed Backhand | — |
| Ranking (entering) | 16 | 266 |
| Ranking points (entering) | 2,444 | 261 |
| Elo (entering) | 1,956 | 1,552 |
| Current career W-L | 250–135 | 2–3 |
| Current career earnings | $26,612,806 | $88,707 |
No prior-path match data is available for this tournament stage.