Stadium: Court 4 Round: 54 Ground: Synthetic outdoor
| ITF W25 Hamamatsu | 2019/10/14 01:00 | Funa Kozaki v Kanami Tsuji | 7-5,6-3 |
| ITF W25 Makinohara | 2019/10/10 00:30 | Funa Kozaki v Namigata, Junri | 3-6,4-6 |
| ITF W25 Makinohara | 2019/10/09 00:30 | Funa Kozaki v Mei Yamaguchi | 6-3,7-5 |
| ITF W25 Makinohara | 2019/10/08 02:40 | Funa Kozaki v Nana Kawagishi | 6-1,6-0 |
| Brisbane, Simples W-ITF-AUS-11A | 2019/09/30 00:00 | Funa Kozaki v Gabriella Da Silva Fick | 2-6,1-6 |
| Brisbane, Simples W-ITF-AUS-11A | 2019/09/29 02:00 | Fowler, Jessica v Funa Kozaki | 2-6,0-6 |
| Anning, Singles W-ITF-CHN-22A | 2019/09/17 03:30 | Oleksandra Oliynykova v Funa Kozaki | 6-3,7-6 |
| Anning, Singles W-ITF-CHN-22A | 2019/09/10 02:30 | Funa Kozaki v Cao, Xue | 4-6,0-6 |
| ITF W25 Hamamatsu | 2019/10/14 01:00 | Hasegawa, Mami v Uchiyama, Honoka | 6-0,6-1 |
| ITF W25 Makinohara | 2019/10/09 02:35 | Eudice Chong v Hasegawa, Mami | 6-4,6-3 |
| ITF W25 Makinohara | 2019/10/08 00:35 | Mana Kawamura v Hasegawa, Mami | 5-7,4-6 |
| ITF W25 Makinohara | 2019/10/07 03:30 | Hasegawa, Mami v Ikumi Yamazaki | 6-3,7-6 |
| Kurume, Singles W-ITF-JPN-11A | 2019/05/13 00:30 | Moore, Tara v Hasegawa, Mami | 7-5,6-3 |
| Hamamatsu, Singles W-WITF-JPN-12A | 2018/10/14 02:00 | Ando, Yuki v Hasegawa, Mami | 3-6,6-7 |
| Hamamatsu, Singles W-WITF-JPN-12A | 2018/10/14 01:00 | Kanako Morisaki v Hasegawa, Mami | 3-6,6-0,6-1 |
| Makinohara, Singles Qualifying W-WITF-JPN-15A | 2018/10/07 00:30 | Hasegawa, Mami v Kawasaki, Mitsumi | 5-7,6-3,1-6 |