Level, 1 wins each over 2 singles meetings since 2026. Last meeting on 22/04/2026 at W100 Tokyo.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 22/04/2026 | W100 Tokyo | Round 1 | hard | Yamaguchi | 6-3 3-6 4-5 |
| 11/03/2026 | W75 Kyoto | Round 1 | indoor hard | Kawaguchi | 6-3 7-5 |
| hard | Yamaguchi 1 - 0 Kawaguchi |
| indoor hard | Yamaguchi 0 - 1 Kawaguchi |
| 2026 | Yamaguchi 1 - 1 Kawaguchi |
166 wins, 140 losses since 2021 (54.2%).
Last matches: D D V D V
130 wins, 93 losses since 2021 (58.3%).
Last matches: V D V D D
Level, 1 wins each over 2 singles meetings since 2026.
On 22/04/2026, at W100 Tokyo (Round 1): Mei Yamaguchi won 6-3 3-6 4-5.