Stadium: Court 7 Round: 25 Ground: Clay
| ITF M15 Tabarka | 2019/04/29 13:30 | Gregorio Cordonnier v Seita Watanabe | 4-6,6-7 |
| ITF M15 Tabarka | 2019/04/29 08:00 | Pierre Gimla v Seita Watanabe | 0-6,0-6 |
| ITF M15 Kashiwa | 2019/04/01 00:00 | Ryota Tanuma v Seita Watanabe | 3-6,6-1,12-10 |
| ITF M15 Kofu | 2019/03/20 07:15 | Seita Watanabe v Sho Katayama | 3-6,2-6 |
| ITF M15 Kofu | 2019/03/18 06:30 | Keigo Shimizu v Seita Watanabe | 1-6,1-6 |
| ITF M15 Kofu | 2019/03/18 03:00 | Seita Watanabe v Shao-Fan Liu | 6-3,4-6,11-9 |
| ITF M15 Nishi-Tokyo | 2019/03/12 05:00 | Makoto Ochi v Seita Watanabe | 6-1,6-2 |
| Challenger Kobe | 2018/11/11 06:10 | Blake Ellis v Seita Watanabe | 6-4,6-2 |
| ITF M15 Tabarka | 2019/04/25 09:00 | Orlando Luz v Anas Fattar | 6-2,6-1 |
| ITF M15 Tabarka | 2019/04/24 08:30 | Mirko Martinez v Anas Fattar | 1-6,5-7 |
| ITF M15 Tabarka | 2019/04/18 08:30 | Anas Fattar v Constantin Schmitz | 3-6,1-6 |
| ITF M15 Tabarka | 2019/04/17 11:45 | Anas Fattar v Tomas Jirousek | 6-4,1-6,6-2 |
| ITF M15 Tabarka | 2019/04/15 12:00 | Anas Fattar v Adrien Bossel | 6-4,2-6,10-6 |
| ITF M15 Tabarka | 2019/04/15 08:00 | Anas Fattar v Jake Hersey | 7-5,6-2 |
| ITF M15 Tabarka | 2019/03/25 11:30 | Anas Fattar v Kyrian Jacquet | 3-6,6-7 |
| ITF M15 Tabarka | 2019/03/25 08:00 | Anas Fattar v Gerard E Juan | 6-0,6-2 |