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: 56.564 $
Matches total: 357
Win: 227
%: 63.59 %
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: 56.564 $
Matches total: 357
Win: 227
%: 63.59 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2024 | 9/11 | 7/8 | 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 | 227/130 | 166/86 | 26/15 | 13/13 | 22/16 | 0/0 | 0/0 |
| perc. % | 63.59 % | 65.87 % | 63.41 % | 50 % | 57.89 % | 0 % | 0 % |
Ayumi Koshiishi / Fixtures
| 24.04.24 05:00 | 1st round | Qiang Wang  | Ayumi Koshiishi | 6-2, 6-1 | match details |  W50 Wuning | Hard |
Ayumi Koshiishi form
Ayumi Koshiishi / Latest Scores
| 24.04.24 | 1st round | Qiang Wang | Ayumi Koshiishi | 6-2, 6-1 |  | match details | W50 Wuning | Hard |
| 22.04.24 | qual. | Ayumi Koshiishi | Jiayou Li | 6-4, 6-1 |  | match details | ||
| 21.04.24 | q 1 | Ayumi Koshiishi | Jiumeng Liu | 6-1, 6-0 | | match details | ||
| 14.04.24 | q 1 | Eunhye Lee | Ayumi Koshiishi | 6-3, 4-6, 6-3 | | match details | W50 Shenzhen | Hard |
| 08.04.24 | qual. | Rina Saigo | Ayumi Koshiishi | 6-3, 6-4 | | match details |  W35 Osaka | Hard |
| 07.04.24 | q 1 | Ayumi Koshiishi | Suzuna Oigawa | 6-0, 4-6, 10-3 | | match details | ||
| 07.04.24 | q 2 | Ayumi Koshiishi | Mei Hasegawa | 6-3, 7-65 | | match details | ||
| 24.03.24 | q 1 | Erika Sema | Ayumi Koshiishi | 6-2, 6-0 | | match details | W50 Kofu | Hard |
| 13.03.24 | 1st round | Dalila Jakupovic | Ayumi Koshiishi | 6-3, 6-1 | | match details |  W35 Indore | Hard |
| 12.03.24 | qual. | Ayumi Koshiishi | Mei Hasegawa | 6-3, 6-1 | | match details | ||
| 11.03.24 | q 2 | Ayumi Koshiishi | Laalitya Kalluri | 6-0, 6-2 | | match details | ||
| 07.03.24 | 2nd round | Dayeon Back | Ayumi Koshiishi | 6-0, 6-1 | | match details | W35 Nagpur | Clay |
| 06.03.24 | 1st round | Ayumi Koshiishi | Diana Marcinkevica | 6-4, 7-66 | | match details | ||
| 28.02.24 | 1st round | Sahaja Yamalapalli | Ayumi Koshiishi | 6-4, 6-2 | | match details | W35 Gurugram | Hard |
| 11.02.24 | q 1 | Isabelle Lacy | Ayumi Koshiishi | 6-3, 6-4 | | match details |  W50 Roehampton | I. hard |
| 05.02.24 | qual. | Lara Salden | Ayumi Koshiishi | 0-6, 6-1, 6-3 | | match details | W50 Edgbaston | I. hard |
| 04.02.24 | q 1 | Ayumi Koshiishi | Summer Yardley | 6-1, 6-2 | | match details | ||
| 30.01.24 | qual. | Amelia Waligora | Ayumi Koshiishi | 6-4, 6-4 | | match details |  W35 Sharm | Hard |
| 29.01.24 | q 2 | Ayumi Koshiishi | Jane Dunyon | 6-0, 6-2 | | match details | ||
| 22.01.24 | q 2 | Saoirse Breen | Ayumi Koshiishi | 5-7, 6-3, 12-10 | | match details |  W35 Monastir | Hard |
| 12.12.23 | qual. | Jenny Lim | Ayumi Koshiishi | 6-2, 6-3 | | match details | W25 Monastir | Hard |
| 11.12.23 | q 2 | Ayumi Koshiishi | Yingqun Sun | 6-0, 6-0 | | match details | ||
| 06.12.23 | 1st round | Andreea Prisacariu | Ayumi Koshiishi | 6-3, 6-2 | | match details | W25 Monastir | Hard |
| 05.12.23 | qual. | Ayumi Koshiishi | Annelin Bakker | 6-1, 4-6, 10-8 | | match details | ||
| 04.12.23 | q 2 | Ayumi Koshiishi | Ioana Zvonaru | 1-6, 6-1, 10-8 | | match details | ||
| 27.11.23 | 1st round | Julie Struplova | Ayumi Koshiishi | 6-4, 6-2 | | match details |  W25 Selva | I. hard |
| 19.11.23 | qual. | Kamilla Bartone | Ayumi Koshiishi | 6-2, 6-4 | | match details | W25 Ortisei | I. hard |
| 16.11.23 | 2nd round | Isabella Shinikova | Ayumi Koshiishi | 7-5, 5-7, 6-2 | | match details | W25 Solarino | Carpet |
| 14.11.23 | 1st round | Ayumi Koshiishi | Pemra Ozgen | 2-6, 6-2, 6-4 | | match details | ||
| 22.10.23 | fin | Ayumi Koshiishi | Shrivalli Rashmikaa Bhamidipaty | 6-2, 6-1 | | match details |  W15 Hua | Hard |
| 21.10.23 | 1/2 | Ayumi Koshiishi | Patcharin Cheapchadej | 6-3, 1-6, 6-1 | | match details | ||
| 20.10.23 | 1/4 | Ayumi Koshiishi | Salakthip Ounmuang | 6-4, 6-3 | | match details | ||
| 19.10.23 | 2nd round | Ayumi Koshiishi | Demi Tran | 6-3, 6-1 | | match details | ||
| 18.10.23 | 1st round | Ayumi Koshiishi | Pawinee Ruamrak | 6-2, 6-0 | | match details | ||
| 03.09.23 | q 1 | Peangtarn Plipuech | Ayumi Koshiishi | 6-4, 6-0 | | match details | W100 Tokyo | Hard |
| 21.08.23 | qual. | Daria Kudashova | Ayumi Koshiishi | 6-2, 3-6, 7-5 | | match details |  W40 Hong | Hard |
| 20.08.23 | q 1 | Ayumi Koshiishi | Kanako Morisaki | 6-4, 6-2 | | match details | ||
| 13.08.23 | fin | Ayumi Koshiishi | Aruzhan Sagandikova | 6-2, 6-2 | | match details |  W15 Ust | Hard |
| 12.08.23 | 1/2 | Ayumi Koshiishi | Sonja Zhiyenbayeva | 6-3, 6-4 | | match details | ||
| 11.08.23 | 1/4 | Ayumi Koshiishi | Anastasia Grechkina | 6-2, 1-6, 6-4 | | match details | ||
| 10.08.23 | 2nd round | Ayumi Koshiishi | Alisa Kummel | 6-4, 6-3 | | match details | ||
| 08.08.23 | 1st round | Ayumi Koshiishi | Maria Kalyakina | 7-65, 7-5 | | match details | ||
| 03.08.23 | 2nd round | Anastasia Zakharova | Ayumi Koshiishi | 6-4, 6-75, 6-2 | | match details | W25 Astana | Hard |
| 02.08.23 | 1st round | Ayumi Koshiishi | Darya Shauha | 7-66, 3-6, 6-2 | | match details | ||
| 23.07.23 | fin | Ayumi Koshiishi | Sofia Camila Rojas | 6-4, 6-2 | | match details | W15 Monastir | Hard |
| 22.07.23 | 1/2 | Ayumi Koshiishi | Katarina Kuzmova | 4-1, Katarina Kuzmova - retired | | match details | ||
| 21.07.23 | 1/4 | Ayumi Koshiishi | Sophia Biolay | 6-2, 6-2 | | match details | ||
| 20.07.23 | 2nd round | Ayumi Koshiishi | Helena Buchwald | 6-3, 2-0, Helena Buchwald - retired | | match details | ||
| 18.07.23 | 1st round | Ayumi Koshiishi | Elizaveta Shebekina | 6-1, 6-2 | | match details | ||
| 16.07.23 | fin | Ayumi Koshiishi | Camilla Zanolini | 6-0, Camilla Zanolini - retired | | match details | W15 Monastir | Hard |
