Stadium: Court 4 Round: 54 Ground: Synthetic outdoor
| ITF W25 Jakarta | 2019/06/17 02:30 | Michika Ozeki v Funa Kozaki | 6-7,7-6,10-0 |
| ITF W15 Tabarka | 2019/05/16 08:30 | Chiara Scholl v Funa Kozaki | 7-6,6-3 |
| ITF W15 Tabarka | 2019/05/15 08:00 | Gloria Ceschi v Funa Kozaki | 2-6,0-6 |
| ITF W15 Tabarka | 2019/05/07 08:30 | Barbara Gatica v Funa Kozaki | 6-2,6-3 |
| ITF W25 Osaka | 2019/04/09 02:50 | Funa Kozaki v Mayo Hibi | 0-6,3-6 |
| ITF W25 Kofu | 2019/03/27 02:35 | Funa Kozaki v Arina Rodionova | 1-6,4-6 |
| ITF Women Kofu Qual | 2018/06/09 04:00 | Ayumi Miyamoto v Funa Kozaki | 6-2,6-2 |
| ITF Women Changwon Qual | 2018/05/20 02:00 | So-Ra Lee v Funa Kozaki | 6-3,6-2 |
| ITF W60 Kurume | 2019/05/13 00:30 | Tara Moore v Mami Hasegawa | 7-5,6-3 |
| ITF Women Hamamatsu | 2018/10/14 02:00 | Yuki Ando v Mami Hasegawa | 3-6,6-7 |
| ITF Women Hamamatsu | 2018/10/14 01:00 | Kanako Morisaki v Mami Hasegawa | 3-6,6-0,6-1 |
| ITF Women Makinohara | 2018/10/07 00:30 | Mami Hasegawa v Mitsumi Kawasaki | 5-7,6-3,1-6 |
| ITF Women Kyoto | 2018/09/04 02:40 | Mami Hasegawa v Himeno Sakatsume | 3-6,4-6 |
| ITF Women Daegu Qual | 2018/06/18 01:00 | Mami Hasegawa v Se-Hyun Kim | 1-6,1-6 |
| ITF Women Daegu Qual | 2018/06/17 02:00 | Eun Se Jang v Mami Hasegawa | 2-6,3-6 |
| ITF Women Gyeongsan Qual | 2018/06/12 01:00 | Yeong Won Jeong v Mami Hasegawa | 6-4,7-6 |