Stadium: Court 10 Round: 26 Ground: Hardcourt outdoor
| Challenger Tampere Qual | 2018/07/23 08:00 | Dimitar Kuzmanov v Tristan Lamasine | 6-7,6-3,4-6 |
| Challenger Potchefstroom | 2021/02/15 13:05 | Jay Clarke v Dimitar Kuzmanov | 7-5,3-6,6-7 |
| Challenger Potchefstroom | 2021/02/12 11:55 | Dimitar Kuzmanov v Cem Ilkel | 6-4,3-6,2-6 |
| Challenger Potchefstroom | 2021/02/11 08:00 | Dimitar Kuzmanov v Elliot Benchetrit | 6-2,7-5 |
| Challenger Potchefstroom | 2021/02/09 10:15 | Gunneswaran, Prajnesh v Dimitar Kuzmanov | 3-6,4-6 |
| Challenger Antalya | 2021/02/01 11:30 | Dimitar Kuzmanov v Facundo Mena | 6-2,4-6,0-6 |
| Challenger Antalya Qual | 2021/01/31 07:00 | Zdenek Kolar v Dimitar Kuzmanov | 3-6,4-6 |
| Challenger Antalya Qual | 2021/01/28 06:30 | Akira Santillan v Dimitar Kuzmanov | 6-4,4-6,7-6 |
| Antalya, Turquie | 2021/01/10 11:10 | Matteo Berrettini v Dimitar Kuzmanov | 6-2,6-3 |
| Challenger Potchefstroom | 2021/02/15 12:25 | Quiroz, Roberto v Tristan Lamasine | 5-7,5-7 |
| Challenger Potchefstroom | 2021/02/10 08:00 | Polansky, Peter v Tristan Lamasine | 6-4,6-4 |
| Challenger Potchefstroom | 2021/02/08 09:30 | Tristan Lamasine v Hunter, Vaughn | 7-6,1-6,6-1 |
| Challenger - Quimper | 2021/02/01 09:30 | Tristan Lamasine v Kamke, Tobias | 5-7,4-6 |
| Challenger Quimper Qual | 2021/01/31 09:00 | Illya Marchenko v Tristan Lamasine | 0-6,6-4,6-7 |
| Challenger - Quimper | 2021/01/26 18:55 | Tristan Lamasine v Sebastian Korda | 6-7,6-4,6-7 |
| Challenger - Quimper | 2021/01/25 09:30 | Marius Copil v Tristan Lamasine | 3-6,4-6 |
| Challenger - Quimper | 2021/01/24 12:05 | Tristan Lamasine v Hugo Grenier | 6-4,7-6 |