Stadium: Court 8 Round: 26 Ground: Hardcourt outdoor
| ITF W15 Osaka | 2023/04/20 01:35 | Aely Arai v Natsumi Kawaguchi | 1-6,4-6 |
| Osaka, Singles W-ITF-JPN-02A | 2023/04/10 01:00 | Anri Nagata v Natsumi Kawaguchi | 7-6,5-7,10-8 |
| Osaka, Singles W-ITF-JPN-02A | 2023/04/09 03:00 | Kanako Morisaki v Natsumi Kawaguchi | 1-6,3-6 |
| Kofu, Qualifications Simples W-ITF-JPN-05A | 2023/03/29 03:45 | Su Jeong Jang v Natsumi Kawaguchi | 6-7,7-6,6-0 |
| Kofu, Qualifications Simples W-ITF-JPN-05A | 2023/03/28 05:35 | Dabin Kim v Natsumi Kawaguchi | 1-6,4-6 |
| Kofu, Qualifications Simples W-ITF-JPN-05A | 2023/03/28 00:30 | Meng Yi Chen v Natsumi Kawaguchi | 0-6,2-6 |
| ITF - W15 Hinode | 2023/03/26 06:00 | Aoi Ito v Natsumi Kawaguchi | 4-6,3-6 |
| ITF - W15 Hinode | 2023/03/26 00:30 | Natsumi Kawaguchi v Ayumi Koshiishi | 6-1,6-2 |
| ITF W15 Osaka | 2023/04/20 02:10 | Kurea Hayasaka v Pei-Chi Lee | 2-6,3-6 |
| Osaka, Singles W-ITF-JPN-02A | 2023/04/10 05:10 | Pei-Chi Lee v Garcia Perez, Georgina | 4-6,6-7 |
| Osaka, Singles W-ITF-JPN-02A | 2023/04/10 01:00 | Pei-Chi Lee v Emerson Jones | 6-7,7-5,11-9 |
| Kashiwa, Qualifications Simples W-ITF-JPN-07A | 2023/04/03 02:45 | Pei-Chi Lee v Garcia Perez, Georgina | 5-7,3-6 |
| Kofu, Qualifications Simples W-ITF-JPN-05A | 2023/03/30 01:00 | Pei-Chi Lee v Na-Lae Han | 0-6,2-6 |
| Kofu, Qualifications Simples W-ITF-JPN-05A | 2023/03/29 02:55 | Pei-Chi Lee v Ya-Hsuan Lee | 6-1,6-1 |
| ITF W40 Bengaluru | 2023/03/06 04:30 | Pei-Chi Lee v Chanta, Aunchisa | 6-1,1-6,1-6 |
| ITF W40 Bengaluru | 2023/03/05 04:00 | Pei-Chi Lee v Humera Baharmus | 6-3,6-3 |