Estadio: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF Tokio - Femenino | 2017/11/07 04:00 | Mei Yamaguchi v Himari Sato | 6-2,6-3 |
| ITF W25 Osaka | 2019/04/11 01:00 | Himari Sato v Mai Minokoshi | 1-6,7-5,1-6 |
| ITF 15 Antalya - Femenino | 2019/02/20 10:35 | Himari Sato v Carole Monnet | 6-7,6-7 |
| ITF 15 Antalya - Femenino | 2019/02/15 06:30 | Gaia Sanesi v Himari Sato | 6-3,1-6,6-1 |
| ITF 15 Antalya - Femenino | 2019/02/12 09:00 | Himari Sato v Julia Stamatova | 7-5,6-4 |
| ITF 15 Antalya - Femenino | 2019/02/08 10:55 | Himari Sato v Yuki Naito | 2-6,7-6,2-6 |
| ITF 15 Antalya - Femenino | 2019/02/05 09:30 | Himari Sato v Anna Ureke | 6-4,4-6,6-4 |
| ITF W25 Playford | 2018/12/30 23:30 | Himari Sato v Belinda Woolcock | 2-6,1-6 |
| ITF Tsukuba - Femenino | 2018/08/22 02:45 | Himari Sato v Nagi Hanatani | 3-6,0-6 |
| ITF W25 Karuizawa | 2019/05/23 04:20 | Emina Bektas v Mei Yamaguchi | 6-1,6-4 |
| ITF W25 Karuizawa | 2019/05/22 01:00 | Mei Yamaguchi v Michika Ozeki | 6-2,6-3 |
| ITF W60 Kurume | 2019/05/13 03:15 | Mana Ayukawa v Mei Yamaguchi | 6-2,7-6 |
| ITF W60 Kurume | 2019/05/13 00:30 | Hiromi Abe v Mei Yamaguchi | 1-6,1-6 |
| ITF W60 Fukuoka | 2019/05/06 02:15 | Mei Yamaguchi v Nagi Hanatani | 6-7,6-3,6-10 |
| ITF W25 Osaka | 2019/04/09 01:00 | Risa Ozaki v Mei Yamaguchi | 6-4,4-6,6-2 |
| ITF W25 Osaka | 2019/04/08 01:00 | Miyu Nakashima v Mei Yamaguchi | 6-2,3-6,8-10 |
| ITF W15 Nanchang | 2019/02/27 03:45 | Shou Na Mu v Mei Yamaguchi | 6-4,6-1 |