Stadium: COURT F Round: 54 Ground: Synthetic outdoor
| 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 |
| ITF Women Kyoto | 2018/09/04 02:40 | Hasegawa, Mami v Himeno Sakatsume | 3-6,4-6 |
| ITF Women Daegu Qual | 2018/06/18 01:00 | Hasegawa, Mami v Kim, SE-Hyun | 1-6,1-6 |
| ITF Women Daegu Qual | 2018/06/17 02:00 | Jang, Eun SE v Hasegawa, Mami | 2-6,3-6 |
| ITF Women Gyeongsan Qual | 2018/06/12 01:00 | Jeong, Yeong Won v Hasegawa, Mami | 6-4,7-6 |
| Kyoto, Qualifications Simples W-ITF-JPN-15A | 2019/09/02 02:00 | Hosonuma, Chisa v Ikumi Yamazaki | 3-6,6-3,10-8 |
| ITF W25 Nanao | 2019/08/26 02:25 | Misaki Matsuda v Ikumi Yamazaki | 7-6,3-6,10-5 |
| Gimcheon, Singles Qualifying W-ITF-KOR-05A | 2019/06/17 02:55 | Ikumi Yamazaki v Jiho Shin | 2-6,3-6 |
| Karuizawa, Singles W-ITF-JPN-12A | 2019/05/20 01:00 | Ikumi Yamazaki v Misaki Matsuda | 4-6,3-6 |
| ITF W15 Cairo | 2019/04/25 08:00 | Ikumi Yamazaki v Roemer, Charlotte | 2-6,4-6 |
| ITF W15 Cairo | 2019/04/24 10:35 | Aya El Sayed v Ikumi Yamazaki | 4-6,4-6 |
| ITF W15 Cairo | 2019/04/22 08:00 | Chanel Janssen v Ikumi Yamazaki | 3-6,2-6 |
| ITF W15 Cairo | 2019/04/18 08:00 | Aya El Sayed v Ikumi Yamazaki | 7-6,6-7,7-6 |