Stadium: Court 22 Round: 25 Ground: Clay
| ITF W15 Heraklion | 2020/10/27 07:00 | Ayumi Koshiishi v Zoe Howard | 6-3,6-0 |
| ITF W15 Heraklion | 2020/10/26 10:00 | Ayumi Koshiishi v Vicky Van De Peer | 6-1,6-4 |
| ITF W25 Perth | 2020/02/23 02:00 | Alana Parnaby v Ayumi Koshiishi | 2-6,6-4,17-15 |
| ITF W25 Perth | 2020/02/18 02:00 | Alicia Smith v Ayumi Koshiishi | 7-5,7-6 |
| ITF W25 Perth | 2020/02/16 04:00 | Luna Jokanovic v Ayumi Koshiishi | 1-6,4-6 |
| ITF W15 Manacor | 2020/01/30 13:40 | Margot Yerolymos v Ayumi Koshiishi | 6-2,6-3 |
| ITF W15 Manacor | 2020/01/29 12:10 | Ayumi Koshiishi v Fiona Ganz | 6-1,6-4 |
| ITF W15 Manacor | 2020/01/27 09:30 | Jerricka Boone v Ayumi Koshiishi | 4-6,4-6 |
| ITF W25 Antalya | 2020/03/04 09:20 | Vlada Koval v Zeynep Sonmez | 4-6,6-4,4-6 |
| ITF W25 Antalya | 2020/03/03 07:00 | Vlada Koval v Eliessa Vanlangendonck | 6-1,6-1 |
| ITF W25 Antalya | 2020/03/02 07:00 | Vlada Koval v Sapfo Sakellaridi | 7-6,6-3 |
| ITF W25 Moscow | 2020/02/27 10:40 | Valentini Grammatikopoulou v Vlada Koval | 6-3,6-3 |
| ITF W25 Moscow | 2020/02/26 13:50 | Dea Herdzelas v Vlada Koval | 3-6,7-6,5-7 |
| ITF W25 Trnava | 2020/02/13 10:00 | Sofya Lansere v Vlada Koval | 6-3,6-1 |
| ITF W25 Trnava | 2020/02/12 11:50 | Miriam Kolodziejova v Vlada Koval | 4-6,2-6 |
| ITF W25 Trnava | 2020/02/11 12:10 | Timea Jaruskova v Vlada Koval | 4-6,0-6 |