Stadium: Court 3 Round: 14 Ground: Clay
| UTR Pro Miki | 2023/02/10 04:30 | Ren Nakamura v Seita Watanabe | 5-7,2-6 |
| ITF M25 Taipei | 2019/07/16 03:50 | Ren Nakamura v Seita Watanabe | 6-4,4-6,5-10 |
| Challenger Burnie | 2024/02/05 00:45 | Yuki Mochizuki v Seita Watanabe | 6-3,6-3 |
| 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 Traralgon | 2024/02/18 01:30 | Mason Naumovski v Ren Nakamura | 5-7,6-3,10-7 |
| ITF M15 Kuala Lumpur | 2023/11/27 01:30 | Mattias Southcombe v Ren Nakamura | 6-3,3-6,10-3 |
| ITF M15 Ipoh Perak | 2023/11/20 01:30 | Ren Nakamura v Chien Hsun Lo | 6-3,3-6,7-10 |
| ITF M15 Kuching | 2023/11/16 03:25 | Ren Nakamura v Taiyo Yamanaka | 1-6,0-6 |
| ITF M15 Kuching | 2023/11/15 03:30 | Jimmy Yang v Ren Nakamura | 2-6,4-6 |
| ITF M15 Kuching | 2023/11/14 02:30 | Tanguy Genier v Ren Nakamura | 4-6,4-6 |
| ITF M15 Kuching | 2023/11/13 04:00 | Ren Nakamura v Ryuhei Azuma | 6-2,6-4 |
| ITF M25 Takasaki | 2023/09/17 05:00 | Hayato Matsuoka v Ren Nakamura | 6-1,7-5 |