Stadium: Court A3 Round: 54 Ground: Hardcourt outdoor
| Hamamatsu, Singles W-WITF-JPN-12A | 2018/10/14 00:00 | Ayumi Koshiishi v Yui Chikaraishi | 7-6,6-2 |
| Taipei, Singles W-ITF-TPE-01A | 2019/07/29 02:00 | Mana Kawamura v Yui Chikaraishi | 6-3,6-0 |
| Hong Kong, Simples W-ITF-HKG-01B | 2019/05/31 12:35 | Ho Ching Wu v Yui Chikaraishi | 7-5,6-0 |
| Hong Kong, Simples W-ITF-HKG-01B | 2019/05/30 07:05 | Yui Chikaraishi v Imanishi, Miharu | 7-6,6-4 |
| Hong Kong, Simples W-ITF-HKG-01B | 2019/05/28 10:25 | Natalia Siedliska v Yui Chikaraishi | 3-6,2-6 |
| Hong Kong, Simples W-ITF-HKG-01B | 2019/05/27 09:30 | Yui Chikaraishi v Rina Saigo | 6-3,6-0 |
| Karuizawa, Singles W-ITF-JPN-12A | 2019/05/20 01:00 | Himeno Sakatsume v Yui Chikaraishi | 6-0,6-3 |
| Singapour, Simples W-ITF-SGP-04A | 2019/05/13 02:00 | Yui Chikaraishi v Rina Saigo | 2-6,0-6 |
| Hamamatsu, Singles W-WITF-JPN-12A | 2018/10/14 00:00 | Ayumi Koshiishi v Yui Chikaraishi | 7-6,6-2 |
| Nonthaburi, Singles W-ITF-THA-01A | 2019/07/30 02:30 | Yidi Yang v Ayumi Koshiishi | 6-0,6-2 |
| Nonthaburi, Singles W-ITF-THA-01A | 2019/07/29 06:20 | Thasaporn Naklo v Ayumi Koshiishi | 3-6,4-6 |
| Nonthaburi, Singles W-ITF-THA-01A | 2019/07/23 04:20 | Ayumi Koshiishi v Michika Ozeki | 2-6,4-6 |
| Nonthaburi, Singles W-ITF-THA-01A | 2019/07/22 08:00 | Ho Ching Wu v Ayumi Koshiishi | 3-6,2-6 |
| Gimcheon, Singles Qualifying W-ITF-KOR-05A | 2019/06/20 01:00 | Ayumi Koshiishi v Jeong, Sunam | 2-6,6-7 |
| Gimcheon, Singles Qualifying W-ITF-KOR-05A | 2019/06/19 01:00 | Ayumi Koshiishi v Kobayashi, Honoka | 4-6,6-4,6-4 |
| Gimcheon, Singles Qualifying W-ITF-KOR-05A | 2019/06/14 02:00 | Ayumi Koshiishi v Misaki Matsuda | 5-7,7-6,3-6 |
| Gimcheon, Singles Qualifying W-ITF-KOR-05A | 2019/06/13 01:30 | Ayumi Koshiishi v Mu, Shou Na | 7-5,6-3 |