Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF W15 Fukui | 2023/04/25 01:00 | Britney Chiu v Honori Koyama | 2-6,3-6 |
| ITF W15 Fukui | 2023/04/24 01:00 | Sera Nishimoto v Honori Koyama | 4-6,2-6 |
| ITF W25 Osaka | 2023/04/10 01:00 | Eri Shimizu v Honori Koyama | 7-5,6-0 |
| ITF W15 Hinode | 2023/03/21 01:00 | Chisato Kanemaki v Honori Koyama | 2-6,1-6 |
| UTR Pro Miki Women | 2023/02/19 02:54 | Honori Koyama v Kaho Oyama | 4-6,6-2,6-0 |
| UTR Pro Miki Women | 2023/02/18 08:37 | Kaili Demi Teso v Honori Koyama | 5-7,1-5 |
| UTR Pro Miki Women | 2023/02/17 04:38 | Kaede Tajima v Honori Koyama | 6-3,3-6,6-3 |
| UTR Pro Miki Women | 2023/02/16 05:00 | Yuna Ohashi v Honori Koyama | 7-6,7-6 |
| ITF W15 Fukui | 2023/04/25 01:00 | Rinon Okuwaki v Nagomi Higashitani | 7-6,6-1 |
| ITF W15 Fukui | 2023/04/24 02:00 | Rinon Okuwaki v Miyu Nakashima | 6-2,6-0 |
| ITF W25 Osaka | 2023/04/18 01:00 | Rinon Okuwaki v Mio Mushika | 2-6,0-6 |
| ITF W25 Osaka | 2023/04/17 02:00 | Honoka Kobayashi v Rinon Okuwaki | 3-6,6-1,7-10 |
| ITF W25 Osaka | 2023/04/10 01:00 | Rinon Okuwaki v Georgina Garcia-Perez | 4-6,6-4,6-10 |
| ITF W25 Osaka | 2023/04/09 03:00 | Rinon Okuwaki v Kanako Osafune | 6-1,6-2 |
| ITF W25 Kashiwa | 2023/04/02 00:30 | Rinon Okuwaki v Georgina Garcia-Perez | 3-6,4-6 |
| ITF W25 Kofu | 2023/03/28 00:30 | Rinon Okuwaki v Yu-Yun Li | 6-7,3-6 |