Stadium: Court C Round: 45 Ground: Hardcourt indoor
| ITF W15 Gimcheon | 2019/06/18 01:00 | Chisa Hosonuma v Jeongyun Lee | 2-6,4-6 |
| ITF W15 Gimcheon | 2019/06/17 01:00 | Chisa Hosonuma v SinHee Kim | 6-3,6-3 |
| ITF W25 Karuizawa | 2019/05/21 04:30 | Kanako Morisaki v Chisa Hosonuma | 6-3,6-2 |
| ITF W25 Karuizawa | 2019/05/20 01:00 | Kiko Nishizato v Chisa Hosonuma | 1-6,4-6 |
| ITF W60 Kurume | 2019/05/13 01:55 | Chisa Hosonuma v Ena Shibahara | 2-6,3-6 |
| ITF W15 Cancun | 2019/03/19 19:00 | Magali Kempen v Chisa Hosonuma | 6-3,6-2 |
| ITF W15 Cancun | 2019/03/16 13:30 | Maria Camila Osorio v Chisa Hosonuma | 6-3,6-1 |
| ITF W15 Cancun | 2019/03/15 13:00 | Chisa Hosonuma v Kirsten-Andrea Weedon | 6-4,6-2 |
| ITF W15 Gimcheon | 2019/06/17 02:55 | Ikumi Yamazaki v Jiho Shin | 2-6,3-6 |
| ITF W25 Karuizawa | 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 Charlotte Roemer | 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 |
| ITF W15 Cairo | 2019/04/17 10:15 | Hala Fouad v Ikumi Yamazaki | 0-6,1-6 |
| ITF W15 Cairo | 2019/04/16 09:00 | Ikumi Yamazaki v Shilpi S Das | 6-0,6-0 |