Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Karuizawa | 2023/05/31 01:00 | Jumpei Yamasaki v Seita Watanabe | 6-4,6-4 |
| UTR Pro Miki | 2023/02/12 02:00 | Tomohiro Masabayashi v Seita Watanabe | 4-6,1-5 |
| UTR Pro Miki | 2023/02/11 03:30 | Yuichiro Inui v Seita Watanabe | 6-7,6-7 |
| UTR Pro Miki | 2023/02/10 04:30 | Ren Nakamura v Seita Watanabe | 5-7,2-6 |
| UTR Pro Miki | 2023/02/09 03:30 | Kosuke Shibano v Seita Watanabe | 2-6,1-6 |
| UTR Pro Miki | 2023/02/08 03:30 | Ryohei Takase v Seita Watanabe | 2-6,1-5 |
| UTR Pro Miki | 2023/02/06 03:30 | Ryotaro Taguchi v Seita Watanabe | 6-2,6-7,7-6 |
| Challenger Kobe | 2022/11/13 01:00 | Mukund Sasikumar v Seita Watanabe | 6-3,6-1 |
| ITF M15 Monastir | 2023/06/15 08:30 | Arthur Bouquier v Gilbert S K Junior | 6-2,6-4 |
| ITF M15 Monastir | 2023/06/13 09:40 | Gilbert S K Junior v Tom Gentzsch | 6-3,6-4 |
| Challenger Orlando | 2022/06/07 18:20 | Gilbert S K Junior v Ulises Blanch | 6-7,4-6 |
| Challenger Orlando | 2022/06/06 15:50 | Gilbert S K Junior v Roman Andres Burruchaga | 6-4,7-6 |
| Challenger Orlando | 2022/06/05 17:55 | Gilbert S K Junior v Mukund Sasikumar | 6-4,6-2 |
| Challenger Little Rock | 2022/05/31 21:15 | Gilbert S K Junior v Hiroki Moriya | 6-7,2-6 |
| Challenger Little Rock | 2022/05/30 15:00 | Gilbert S K Junior v Dane Sweeny | 6-4,6-3 |
| Challenger Little Rock | 2022/05/29 15:00 | Gilbert S K Junior v Matias Franco Descotte | 6-0,6-3 |