Includes finals, playoffs and exhibition games, so totals run higher than regular-season figures.
| Season | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 Wta tourJapan | 4 | 1 | 3 | 6 | 43 | 42 | 1 | 1 | 1 | 53 | 32 | 18 | 9 | 9 | 4 | 8 | 67 | 25 | 2 | 7 | 90 |
| 2025 Wta tourJapan | 2 | 1 | 2 | 3 | 29 | 26 | 0 | 8 | 2 | 157 | 96 | 57 | 33 | 28 | 7 | 18 | 176 | 82 | 12 | 18 | 300 |
| 2024 Wta tourJapan | 2 | 0 | 0 | 4 | 16 | 25 | 0 | 7 | 5 | 142 | 90 | 54 | 22 | 21 | 16 | 25 | 123 | 45 | 4 | 9 | 180 |
| Career3 seasons | 8 | 2 | 5 | 13 | 88 | 93 | 1 | 16 | 8 | 352 | 218 | 129 | 64 | 58 | 27 | 51 | 366 | 152 | 18 | 34 | 570 |
| Game | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chennai Open: Round 1 v Zhibek KulambayevaL 0-2 4 Nov | 0 | 0 | 2 | 9 | 13 | 0 | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Chennai Open: Qualifying Final v Zhibek KulambayevaL 1-2 1 Nov | 0 | 1 | 2 | 15 | 16 | 1 | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Chennai Open: Qualifying 1st Round v Zeel DesaiW 2-0 31 Oct | 1 | 2 | 0 | 12 | 1 | 0 | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Singapore: Round of 32 v Alycia ParksL 0-2 21 Sept | 0 | 0 | 2 | 7 | 12 | 0 | 1 | 1 | 53 | 32 | 18 | 9 | 9 | 4 | 8 | 67 | 25 | 2 | 7 | 90 |
| Split | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HomeHome or away · won 1 of 3 | 3 | 0.3 | 1.0 | 1.3 | 12.0 | 10.0 | 0.3 | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| LossesResult | 6 | 0.0 | 0.3 | 2.0 | 10.7 | 14.2 | 0.2 | 1.5 | 1.2 | 49.0 | 29.8 | 17.7 | 9.2 | 8.0 | 4.5 | 7.8 | 51.0 | 19.7 | 2.0 | 4.3 | 77.7 |
| WinsResult | 2 | 1.0 | 1.5 | 0.5 | 12.0 | 4.0 | 0.0 | 3.5 | 0.5 | 29.0 | 19.5 | 11.5 | 4.5 | 5.0 | 0.0 | 2.0 | 30.0 | 17.0 | 3.0 | 4.0 | 52.0 |
| Regular seasonStage · won 1 of 6 | 6 | 0.2 | 0.3 | 1.8 | 10.2 | 12.7 | 0.0 | 2.7 | 1.3 | 58.7 | 36.3 | 21.5 | 10.7 | 9.7 | 4.5 | 8.5 | 61.0 | 25.3 | 3.0 | 5.7 | 95.0 |
| FinalsStage · won 1 of 2 | 2 | 0.5 | 1.5 | 1.0 | 13.5 | 8.5 | 0.5 | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Zhibek KulambayevaOpponent · won 0 of 2 | 2 | 0.0 | 0.5 | 2.0 | 12.0 | 14.5 | 0.5 | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Alycia ParksOpponent · won 0 of 1 | 1 | 0.0 | 0.0 | 2.0 | 7.0 | 12.0 | 0.0 | 1.0 | 1.0 | 53.0 | 32.0 | 18.0 | 9.0 | 9.0 | 4.0 | 8.0 | 67.0 | 25.0 | 2.0 | 7.0 | 90.0 |
| Bianca AndreescuOpponent · won 0 of 1 | 1 | 0.0 | 0.0 | 2.0 | 8.0 | 13.0 | 0.0 | 0.0 | 2.0 | 75.0 | 49.0 | 26.0 | 10.0 | 11.0 | 8.0 | 14.0 | 61.0 | 25.0 | 3.0 | 7.0 | 97.0 |
| Francesca JonesOpponent · won 1 of 1 | 1 | 1.0 | 1.0 | 1.0 | 12.0 | 7.0 | 0.0 | 7.0 | 1.0 | 58.0 | 39.0 | 23.0 | 9.0 | 10.0 | 0.0 | 4.0 | 60.0 | 34.0 | 6.0 | 8.0 | 104 |
| Joanna GarlandOpponent · won 0 of 1 | 1 | 0.0 | 1.0 | 2.0 | 17.0 | 19.0 | 0.0 | 1.0 | 1.0 | 99.0 | 57.0 | 34.0 | 24.0 | 18.0 | 7.0 | 14.0 | 116 | 48.0 | 6.0 | 10.0 | 196 |
| Sofia KeninOpponent · won 0 of 1 | 1 | 0.0 | 0.0 | 2.0 | 8.0 | 12.0 | 0.0 | 7.0 | 3.0 | 67.0 | 41.0 | 28.0 | 12.0 | 10.0 | 8.0 | 11.0 | 62.0 | 20.0 | 1.0 | 2.0 | 83.0 |
| Zeel DesaiOpponent · won 1 of 1 | 1 | 1.0 | 2.0 | 0.0 | 12.0 | 1.0 | 0.0 | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| HardGround · won 1 of 5 | 5 | 0.2 | 0.4 | 1.8 | 10.4 | 12.6 | 0.0 | 3.2 | 1.6 | 70.4 | 43.6 | 25.8 | 12.8 | 11.6 | 5.4 | 10.2 | 73.2 | 30.4 | 3.6 | 6.8 | 114 |
| Centre CourtGround · won 1 of 2 | 2 | 0.5 | 1.5 | 1.0 | 13.5 | 8.5 | 0.5 | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Court 2Ground · won 0 of 1 | 1 | 0.0 | 0.0 | 2.0 | 9.0 | 13.0 | 0.0 | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
Wins-losses for Yamaguchi. Tap a rival for the full head to head.
Stats from official league and public sports feeds. Updated hourly. Tennis history by Jeff Sackmann / Tennis Abstract (CC BY-NC-SA 4.0).