Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF - M15 Sharm El Sheikh | 2020/03/03 08:00 | Seita Watanabe v Ghinda, Iancu-Lustinian | 6-0,6-2 |
| ITF - M15 Sharm El Sheikh | 2020/03/02 08:00 | Seita Watanabe v Ilnytskyy, Svyatoslav | 6-1,6-3 |
| ITF - M15 Sharm El Sheikh | 2020/02/25 08:00 | Seita Watanabe v Uzhylovsky, Vladimir | 5-7,3-6 |
| ITF - M15 Sharm El Sheikh | 2020/02/24 09:00 | Seita Watanabe v Speziali, Maurizio | 6-2,6-0 |
| ITF - M15 Sharm El Sheikh | 2020/02/19 16:35 | Vitaliy Sachko v Seita Watanabe | 6-3,6-1 |
| ITF - M15 Sharm El Sheikh | 2020/02/18 08:00 | Seita Watanabe v Trocker, Moritz | 6-0,6-1 |
| ITF - M15 Sharm El Sheikh | 2020/02/17 09:00 | Seita Watanabe v Gaware, Sahil | 6-0,6-2 |
| ITF - M15 Sharm El Sheikh | 2020/02/16 10:00 | Seita Watanabe v Parshutin, Denis | 6-2,6-0 |
| Challenger - Cherbourg | 2020/02/09 09:30 | Vit Kopriva v Pospisil, Jaroslav | 6-2,6-2 |
| Challenger - Quimper | 2020/01/27 09:00 | Lorenzo Musetti v Pospisil, Jaroslav | 6-7,6-4,6-4 |
| Helsinki, Finland | 2019/11/13 12:30 | Pospisil, Jaroslav v Nikola Milojevic | 0-6,6-4,3-6 |
| Helsinki, Finland | 2019/11/12 14:35 | Pospisil, Jaroslav v Igor Sijsling | 7-5,6-2 |
| Helsinki, Finland | 2019/11/11 11:00 | Drzewiecki, Karol v Pospisil, Jaroslav | 4-6,0-6 |
| ITF M15 Prague | 2019/11/06 13:35 | Pospisil, Jaroslav v Andrew Paulson | 4-6,7-6,4-6 |
| ITF M15 Opava | 2019/11/02 09:00 | Pospisil, Jaroslav v Petr Nouza | 1-6,4-6 |
| ITF M15 Opava | 2019/11/01 08:55 | Pospisil, Jaroslav v Dembek, Michal | 4-6,6-3,6-4 |