General Statistics - Koshiishi, Ayumi
562
Rank
100 - 40
Wins-Losses
449 (2025)
Highest ranking
General Statistics - Yamaguchi, Mei
509
Rank
72 - 62
Wins-Losses
276 (2024)
Highest ranking
Ranking - Koshiishi, Ayumi
| Year | Ranking | Summary | Clay | Hardcourt | Indoor | Grass | Other |
|---|---|---|---|---|---|---|---|
| 2025 | 449 | 0/1 | - | 0/1 | - | - | - |
| 2024 | 472 | 45/30 | 1/1 | 35/24 | 9/5 | - | - |
| 2023 | 562 | 50/20 | - | 50/18 | 0/2 | - | - |
| 2022 | 765 | 19/12 | - | 16/9 | 3/3 | - | - |
| 2021 | 579 | 48/15 | 4/4 | 41/10 | 3/1 | - | - |
| 2020 | 873 | 25/9 | 16/5 | 9/4 | - | - | - |
| 2019 | 856 | 22/23 | 5/5 | 13/15 | 4/3 | - | - |
| 2018 | 616 | 28/21 | - | 28/21 | - | - | - |
| 2017 | 1001 | 15/12 | - | 15/10 | 0/2 | - | - |
| 2016 | 1034 | 10/7 | - | 5/4 | 3/2 | 2/1 | - |
| Summary | 262/150 | 26/15 | 212/116 | 22/18 | 2/1 | 0/0 |
Ranking - Yamaguchi, Mei
| Year | Ranking | Summary | Clay | Hardcourt | Indoor | Grass | Other |
|---|---|---|---|---|---|---|---|
| 2026 | - | 1/0 | - | 1/0 | - | - | - |
| 2025 | 289 | 11/9 | 2/3 | 9/6 | - | - | - |
| 2024 | 276 | 47/27 | 1/1 | 46/26 | - | - | - |
| 2023 | 509 | 36/31 | 1/1 | 34/27 | 0/1 | 1/2 | - |
| 2022 | 754 | 15/13 | 8/5 | 6/6 | 1/2 | - | - |
| 2021 | 596 | 26/13 | 13/9 | 13/4 | - | - | - |
| 2020 | 579 | 9/5 | - | 8/4 | 1/1 | - | - |
| 2019 | 679 | 18/12 | 4/2 | 14/10 | - | - | - |
| 2018 | 571 | 17/14 | - | 17/14 | - | - | - |
| 2017 | 728 | 15/11 | - | 11/10 | 4/1 | - | - |
| 2016 | - | 2/7 | - | 1/2 | 1/1 | 0/4 | - |
| 2015 | - | 2/2 | - | - | - | 2/2 | - |
| Summary | 199/144 | 29/21 | 160/109 | 7/6 | 3/8 | 0/0 |