Stadium: Court 2 Round: 44 Ground: Hardcourt outdoor
| ITF - M15 Nonthaburi | 2019/11/24 08:30 | Seita Watanabe v Timur Khabibulin | 3-6,3-6 |
| Challenger - Kobe | 2019/11/04 07:00 | Shintaro Imai v Seita Watanabe | 6-4,6-2 |
| ITF M15 Nanchang | 2019/10/02 02:00 | Kousuke Ogura v Seita Watanabe | 4-6,7-5,6-4 |
| ITF - M15 Hua Hin | 2019/09/05 05:00 | Seita Watanabe v Takashi Saito | 4-6,4-6 |
| ITF - M15 Hua Hin | 2019/09/04 03:00 | Arjun Kadhe v Seita Watanabe | 2-6,2-6 |
| ITF - M15 Hua Hin | 2019/09/03 08:55 | Aaron Schmid v Seita Watanabe | 3-6,3-6 |
| ITF - M15 Hua Hin | 2019/09/02 06:35 | Seita Watanabe v Cameron Green | 6-2,2-6,10-7 |
| ITF - M15 Hua Hin | 2019/08/27 08:45 | Billy Harris v Seita Watanabe | 6-2,6-1 |
| ITF - M15 Sharm El Sheikh | 2020/02/09 08:00 | Daniil Glinka v Denis Parshutin | 6-2,6-2 |
| ITF - M15 Heraklion | 2019/11/17 07:30 | Denis Parshutin v Jack Gibbens | 2-6,4-6 |
| ITF - M15 Heraklion | 2019/11/11 08:00 | Adrian Bodmer v Denis Parshutin | 6-1,6-0 |
| ITF - M15 Heraklion | 2019/11/10 07:30 | Denis Parshutin v Gilad Tamar | 6-3,7-6 |
| ITF - M15 Sharm El Sheikh | 2019/10/20 12:30 | Denis Parshutin v Mihailo Popovic | 0-6,4-6 |
| ITF - M15 Sharm El Sheikh | 2019/10/13 12:30 | Hans Peter Kaufmann v Denis Parshutin | 6-1,6-1 |
| ITF M25 Irpin | 2019/08/28 07:30 | Guilherme Clezar v Denis Parshutin | 6-0,6-1 |
| ITF M15 Irpin | 2019/08/13 13:10 | Denis Parshutin v Daniil Savelev | 3-6,6-1,4-6 |