Stadium: Court 3 Round: 19 Ground: Hardcourt outdoor
| Challenger Burnie | 2024/01/28 02:35 | Yuki Mochizuki v Seita Watanabe | 7-6,6-0 |
| Challenger Burnie Qual | 2024/02/04 02:25 | Yuki Mochizuki v Jayden Court | 6-2,6-2 |
| Challenger Burnie | 2024/01/30 04:25 | Yuki Mochizuki v Hayden Jones | 6-4,5-7,2-6 |
| Challenger Burnie | 2024/01/29 00:50 | Yuki Mochizuki v Pavle Marinkov | 1-6,6-3,6-2 |
| Challenger Burnie | 2024/01/28 02:35 | Yuki Mochizuki v Seita Watanabe | 7-6,6-0 |
| Challenger Yokkaichi | 2023/11/28 05:45 | Yuki Mochizuki v Geoffrey Blancaneaux | 0-6,4-6 |
| Challenger Yokkaichi | 2023/11/27 01:00 | Yusuke Takahashi v Yuki Mochizuki | 6-2,3-6,7-6 |
| Challenger Yokkaichi | 2023/11/26 01:00 | Yannik Steinegger v Yuki Mochizuki | 3-6,2-6 |
| Challenger Yokohama | 2023/11/19 03:20 | Omar Jasika v Yuki Mochizuki | 6-0,7-6 |
| Challenger Burnie Qual | 2024/02/04 03:35 | Seita Watanabe v Hanyi Liu | 7-6,6-3 |
| Challenger Burnie | 2024/01/28 02:35 | Yuki Mochizuki v Seita Watanabe | 7-6,6-0 |
| ITF M15 Yanagawa | 2023/12/27 00:30 | Seita Watanabe v Duckhee Lee | 1-6,6-7 |
| ITF M15 Yanagawa | 2023/12/22 05:10 | Masamichi Imamura v Seita Watanabe | 3-6,6-4,6-3 |
| ITF M15 Yanagawa | 2023/12/21 03:55 | Seita Watanabe v Shu Matsuoka | 7-5,6-4 |
| ITF M15 Yanagawa | 2023/12/20 02:30 | Seita Watanabe v Hayato Matsuoka | 7-5,6-2 |
| ITF M25 Kalaburagi | 2023/12/01 04:00 | David Pichler v Seita Watanabe | 6-2,6-0 |
| ITF M25 Kalaburagi | 2023/11/30 07:45 | Seita Watanabe v Rishi Reddy | 6-2,6-3 |