Stadium: Waseda Indoor 2 Round: 28 Ground: Hardcourt outdoor
| ITF W15 Hinode | 2023/03/24 00:00 | Akiko Omae v Natsumi Kawaguchi | 4-6,4-6 |
| ITF W15 Hinode | 2023/03/23 07:10 | Gyeong Seo Lee v Natsumi Kawaguchi | 3-6,3-6 |
| ITF W15 Hinode | 2023/03/22 04:30 | Kanako Osafune v Natsumi Kawaguchi | 3-6,1-6 |
| ITF W60 Kyoto | 2022/12/19 03:00 | Natsumi Kawaguchi v Ramu Ueda | 6-3,4-6,7-10 |
| ITF W25 Monastir | 2022/12/16 10:10 | Adithya Karunaratne v Natsumi Kawaguchi | 6-4,6-2 |
| ITF W25 Monastir | 2022/12/15 08:30 | Natsumi Kawaguchi v Maria Timofeeva | 2-6,6-2,6-2 |
| ITF W25 Monastir | 2022/12/14 11:30 | Alice Rame v Natsumi Kawaguchi | 6-7,3-6 |
| ITF W25 Monastir | 2022/12/13 10:45 | Natsumi Kawaguchi v Yaroslava Bartashevich | 6-2,6-3 |
| ITF W15 Hinode | 2023/03/24 00:00 | Yuka Hosoki v Ayumi Koshiishi | 7-5,2-6,0-6 |
| ITF W15 Hinode | 2023/03/23 02:35 | Chisa Hosonuma v Ayumi Koshiishi | 2-6,1-6 |
| ITF W15 Hinode | 2023/03/22 01:00 | Momoko Nishio v Ayumi Koshiishi | 4-6,6-7 |
| ITF W15 Kuching | 2023/03/05 01:30 | Hanyu Guo v Ayumi Koshiishi | 7-5,2-6,1-6 |
| ITF W15 Kuching | 2023/03/04 01:30 | Shuo Feng v Ayumi Koshiishi | 0-6,1-6 |
| ITF W15 Kuching | 2023/03/03 01:30 | Ayumi Koshiishi v Aoi Ito | 6-1,7-6 |
| ITF W15 Kuching | 2023/03/02 01:30 | Ayumi Koshiishi v Kisa Yoshioka | 6-3,6-2 |
| ITF W15 Kuching | 2023/03/01 09:35 | Ayumi Koshiishi v Jo-Leen Saw | 6-2,6-0 |