Stadium: Court 6 Round: 44 Ground: Hardcourt outdoor
| ITF W15 Antalya | 2020/01/13 07:00 | Mariia Kostiuk v Laure Line Glaude | 2-6,4-6 |
| ITF W15 Antalya | 2020/01/07 07:00 | Tuana Tinaztepe v Mariia Kostiuk | 2-6,6-2,12-10 |
| ITF W15 Antalya | 2019/12/15 09:00 | Katsiaryna Skachkova v Mariia Kostiuk | 6-3,6-4 |
| ITF W25 Solarino Qual | 2019/11/25 09:00 | Mariia Kostiuk v Giulia Martinelli | 3-6,1-6 |
| ITF W60 Montreux | 2019/09/02 08:25 | Andreea Ghitescu v Mariia Kostiuk | 6-1,6-1 |
| ITF W60 Concord | 2019/08/12 20:50 | Sophia Whittle v Mariia Kostiuk | 6-1,6-1 |
| ITF W60 Concord | 2019/08/12 16:59 | Theresa Papikian v Mariia Kostiuk | 3-6,5-7 |
| ITF W60 Concord | 2019/08/12 16:20 | Theresa Papikian v Mariia Kostiuk | 3-6,5-7 |
| ITF W15 Nonthaburi | 2019/12/04 02:30 | Ying Zhang v Aiko Yoshitomi | 7-5,6-3 |
| ITF W15 Nonthaburi | 2019/12/03 02:30 | Aiko Yoshitomi v Kwan Yau Ng | 7-5,7-5 |
| ITF W15 Nonthaburi | 2019/12/02 05:05 | Aiko Yoshitomi v Juliette Daries | 6-3,7-5 |
| ITF W15 Nonthaburi Qual | 2019/12/01 07:10 | Aiko Yoshitomi v Puntila Namwong | 6-0,6-1 |
| ITF W15 Antalya | 2019/11/19 08:30 | Oona Orpana v Aiko Yoshitomi | 6-0,6-3 |
| ITF W15 Antalya | 2019/11/16 09:50 | Aiko Yoshitomi v Ipek Oz | 1-6,1-6 |
| ITF W15 Antalya | 2019/11/16 06:30 | Lexie Stevens v Aiko Yoshitomi | 4-6,5-7 |
| ITF W15 Antalya | 2019/11/12 06:30 | Aiko Yoshitomi v Fanni Gecsek | 7-6,6-2 |