Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF W25 Karuizawa | 2023/05/26 02:10 | Natsumi Kawaguchi v Johanne C Svendsen | 6-4,3-6,1-6 |
| ITF W25 Karuizawa | 2023/05/24 04:35 | Rinon Okuwaki v Natsumi Kawaguchi | 0-6,4-6 |
| ITF W60 Kurume | 2023/05/17 01:00 | Natsumi Kawaguchi v Eri Shimizu | 3-6,4-6 |
| ITF W60 Fukuoka | 2023/05/13 04:15 | Natsumi Kawaguchi v Carol Zhao | 6-1,7-6 |
| ITF W60 Fukuoka | 2023/05/12 03:35 | Sara Saito v Natsumi Kawaguchi | 6-1,6-7,6-7 |
| ITF W60 Fukuoka | 2023/05/11 01:00 | Natsumi Kawaguchi v Sakura Hosogi | 6-1,6-4 |
| ITF W60 Fukuoka | 2023/05/10 01:00 | Aoi Ito v Natsumi Kawaguchi | 4-6,5-7 |
| ITF W60 Fukuoka | 2023/05/08 04:25 | Natsumi Kawaguchi v Miho Kuramochi | 6-3,7-5 |
| ITF W25 Tokyo | 2023/05/29 03:00 | Nana Kawagishi v Kayo Nishimura | 7-6,2-6,10-7 |
| ITF W25 Karuizawa | 2023/05/26 00:30 | Nana Kawagishi v Aoi Ito | 3-6,3-6 |
| ITF W25 Karuizawa | 2023/05/25 00:30 | Funa Kozaki v Nana Kawagishi | 3-6,4-6 |
| ITF W60 Kurume | 2023/05/15 03:10 | Nana Kawagishi v Rinko Matsuda | 1-6,1-6 |
| ITF W60 Fukuoka | 2023/05/08 03:40 | Aoi Ito v Nana Kawagishi | 6-4,6-2 |
| ITF W60 Fukuoka | 2023/05/08 01:00 | Erina Hayashi v Nana Kawagishi | 1-6,4-6 |
| ITF W80 Gifu | 2023/05/01 04:35 | Nana Kawagishi v Mana Ayukawa | 7-6,2-6,3-6 |
| ITF W15 Fukui | 2023/04/25 02:00 | Pei-Chi Lee v Nana Kawagishi | 6-2,6-3 |