Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF W25 Karuizawa | 2019/05/22 01:00 | Mana Kawamura v Leonie Kung | 3-6,1-6 |
| ITF W25 Karuizawa | 2019/05/21 04:00 | Ramu Ueda v Mana Kawamura | 4-6,6-2,7-10 |
| ITF W25 Karuizawa | 2019/05/20 01:00 | Mua Shigeta v Mana Kawamura | 1-6,1-6 |
| ITF W25 Osaka | 2019/04/08 06:40 | Nagi Hanatani v Mana Kawamura | 6-4,6-0 |
| ITF W25 Osaka | 2019/04/08 01:00 | Mana Kawamura v Naho Sato | 6-2,6-2 |
| ITF W25 Kofu | 2019/03/26 01:00 | Ankita Raina v Mana Kawamura | 6-0,6-1 |
| ITF W25 Nishi-Tama | 2019/03/12 04:55 | Mana Kawamura v Dasha Lopatetskaya | 1-6,0-6 |
| ITF W15 Nanchang | 2019/03/01 03:00 | Hanyu Guo v Mana Kawamura | 6-1,6-4 |
| ITF W15 Tabarka | 2019/05/21 11:20 | Mio Kozaki v Noelia Bouzo Zanotti | 3-6,1-6 |
| ITF W15 Tabarka | 2019/05/16 08:30 | Emmanuelle Girard v Mio Kozaki | 6-0,6-2 |
| ITF W15 Tabarka | 2019/05/15 11:40 | Daria Solovyeva v Mio Kozaki | 2-6,3-6 |
| ITF W15 Tabarka | 2019/05/07 08:30 | Mio Kozaki v Susan Doldan | 6-7,1-6 |
| ITF W15 Tabarka | 2019/05/06 08:30 | Mio Kozaki v Francesca Covi | 6-0,6-4 |
| ITF W25 Osaka | 2019/04/09 04:20 | Mio Kozaki v Daria Snigur | 0-6,2-6 |
| ITF W25 Kofu | 2019/03/27 03:20 | Mio Kozaki v Mayo Hibi | 0-6,0-6 |
| ITF W25 Osaka | 2019/02/27 01:00 | Mio Kozaki v Miharu Imanishi | 0-6,0-6 |