Name: Ayumi Koshiishi
Country: Japan
Birthdate: 28.07.00, 23 years
WTA ranking: 640
TOP ranking's position: 532 (23.05.22, 8200 points)
Points: 65
Prize money: 56564 $
Matches total: 356
Win: 227
%: 63.76 %
Country: Japan
Birthdate: 28.07.00, 23 years
WTA ranking: 640
TOP ranking's position: 532 (23.05.22, 8200 points)
Points: 65
Prize money: 56564 $
Matches total: 356
Win: 227
%: 63.76 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2024 | 9/10 | 7/7 | 1/1 | 1/2 | 0/0 | 0/0 | 0/0 |
| 2023 | 50/20 | 49/17 | 0/0 | 0/2 | 1/1 | 0/0 | 0/0 |
| 2022 | 20/12 | 16/8 | 0/0 | 3/3 | 1/1 | 0/0 | 0/0 |
| 2021 | 48/15 | 41/10 | 4/4 | 3/1 | 0/0 | 0/0 | 0/0 |
| 2020 | 25/9 | 9/4 | 16/5 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2019 | 22/23 | 13/13 | 5/5 | 4/3 | 0/2 | 0/0 | 0/0 |
| 2018 | 30/21 | 23/18 | 0/0 | 0/0 | 7/3 | 0/0 | 0/0 |
| 2017 | 13/12 | 7/5 | 0/0 | 0/1 | 6/6 | 0/0 | 0/0 |
| 2016 | 10/7 | 1/3 | 0/0 | 2/1 | 7/3 | 0/0 | 0/0 |
| TOTAL | 227/129 | 166/85 | 26/15 | 13/13 | 22/16 | 0/0 | 0/0 |
| perc. % | 63.76 % | 66.14 % | 63.41 % | 50 % | 57.89 % | 0 % | 0 % |
Ayumi Koshiishi / scheduled / last
| no matches found |
Ayumi Koshiishi form / year 2017 / surface: Hard
Ayumi Koshiishi / year 2017 / surface: Hard
| 27.12.17 | 2nd round | Ling Zhang | Ayumi Koshiishi | 6-4, 6-3 |  | match details |  Hong Kong | Hard |
| 25.12.17 | 1st round | Ayumi Koshiishi | Yuqi Sheng | 7-68, 6-2 |  | match details | ||
| 24.12.17 | qual. | Ayumi Koshiishi | Dariya Detkovskaya | 7-5, 6-2 | | match details | ||
| 23.12.17 | q 1 | Ayumi Koshiishi | Angela Wingshan Sou | 6-0, 6-0 | | match details | ||
| 06.11.17 | q 2 | Naomi Cheong | Ayumi Koshiishi | 7-65, 6-1 | | match details |  Tokyo | Hard |
| 06.11.17 | q 1 | Ayumi Koshiishi | Mitsumi Kawasaki | 6-4, 5-7, 6-4 | | match details | ||
| 21.08.17 | q 1 | Aiko Yoshitomi | Ayumi Koshiishi | 7-5, 4-6, 6-3 | | match details | Tsukuba | Hard |
| 22.03.17 | 1st round | Risa Ushijima | Ayumi Koshiishi | 6-1, 6-1 | | match details | Nishi Tama | Hard |
| 20.03.17 | q 2 | Ayumi Koshiishi | Robu Kajitani | 1-6, 6-0, 6-3 | | match details | ||
| 20.03.17 | qual. | Ayumi Koshiishi | Eri Shimizu | 6-3, 7-5 | | match details | ||
| 20.03.17 | q 1 | Ayumi Koshiishi | Nina Stadler | 0-6, 7-66, 6-3 | | match details | ||
| 06.03.17 | q 1 | Haruka Kaji | Ayumi Koshiishi | 4-6, 6-1, 6-4 | | match details | Yokohama | Hard |