Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF - Figueira Da Foz W25 | 2021/06/18 11:30 | Momoko Kobori v Yuriko Lily Miyazaki | 2-6,1-6 |
| ITF - Figueira Da Foz W25 | 2021/06/16 11:55 | Isabelle Haverlag v Momoko Kobori | 1-6,3-6 |
| ITF - Sharm El Sheikh W15 | 2021/03/19 07:00 | Momoko Kobori v Sakura Hosogi | 3-6,4-6 |
| ITF - Sharm El Sheikh W15 | 2021/03/18 07:00 | Momoko Kobori v Jenna Defalco | 6-1,6-2 |
| ITF - Sharm El Sheikh W15 | 2021/03/17 09:50 | Momoko Kobori v Demi Tran | 6-0,6-1 |
| ITF - Sharm El Sheikh W15 | 2021/03/14 06:55 | Yuriko Lily Miyazaki v Momoko Kobori | 6-2,4-6,6-3 |
| ITF - Sharm El Sheikh W15 | 2021/03/13 07:00 | Momoko Kobori v Sakura Hosogi | 6-1,6-1 |
| ITF - Sharm El Sheikh W15 | 2021/03/12 07:00 | Elizabeth Mandlik v Momoko Kobori | 0-6,4-6 |
| ITF - Porto W25 | 2021/06/22 10:00 | Angelica Moratelli v Marta Custic | 6-7,6-7 |
| ITF - Porto W25 | 2021/06/21 17:00 | Ashlyn Krueger v Marta Custic | 4-6,4-6 |
| ITF - Porto W25 | 2021/06/20 15:00 | Federica Rossi v Marta Custic | 0-6,7-6,10-12 |
| ITF - Madryt W25 | 2021/06/13 10:00 | Marta Custic v Lucia L Domingo | 6-0,3-6,4-10 |
| ITF - Platja D’Aro W25 | 2021/05/16 10:00 | Marta Custic v Melanie Stokke | 2-6,2-6 |
| ITF - La Bisbal W60 | 2021/05/13 12:05 | Marina Bassols Ribera v Marta Custic | 6-3,6-4 |
| ITF - La Bisbal W60 | 2021/05/12 10:10 | Marta Custic v Ysaline Bonaventure | 0-6,7-6,6-2 |
| WTA Madryt | 2021/04/27 10:20 | Danka Kovinic v Marta Custic | 6-3,6-2 |