Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| Nur Sultan, Kazakhstan | 2021/03/01 04:00 | Lenz, Julian v Manafov, Vladyslav | 7-6,5-7,4-6 |
| Challenger Nur-Sultan Qual | 2021/02/28 04:00 | Lenz, Julian v Tashbulatov, Dostanbek | 6-4,6-3 |
| Challenger - Cherbourg | 2021/02/09 14:40 | Lenz, Julian v Hugo Gaston | 1-6,6-3,3-6 |
| Challenger Quimper Qual | 2021/01/31 10:50 | Lenz, Julian v Kamke, Tobias | 2-6,6-2,3-6 |
| Challenger - Quimper | 2021/01/24 13:00 | Tung-Lin Wu v Lenz, Julian | 4-6,6-3,6-1 |
| Open d'Australie | 2021/01/12 09:35 | Damir Dzumhur v Lenz, Julian | 6-2,6-2 |
| Open d'Australie | 2021/01/11 07:30 | Lenz, Julian v Renzo Olivo | 1-6,6-2,6-2 |
| Challenger Maia | 2020/12/01 11:00 | Jozef Kovalik v Lenz, Julian | 6-1,4-6,6-2 |
| Nur Sultan, Kazakhstan | 2021/02/27 06:25 | Gunneswaran, Prajnesh v Jurij Rodionov | 2-6,6-3,3-6 |
| Nur Sultan, Kazakhstan | 2021/02/26 07:40 | Martin Klizan v Gunneswaran, Prajnesh | 3-6,6-4,4-6 |
| Nur Sultan, Kazakhstan | 2021/02/25 05:00 | Schnur, Brayden v Gunneswaran, Prajnesh | 6-3,3-6,0-6 |
| Nur Sultan, Kazakhstan | 2021/02/24 08:30 | Tashbulatov, Dostanbek v Gunneswaran, Prajnesh | 2-6,3-6 |
| Challenger Potchefstroom | 2021/02/15 10:50 | Gunneswaran, Prajnesh v Akira Santillan | 3-6,6-3,5-7 |
| Challenger Potchefstroom | 2021/02/09 10:15 | Gunneswaran, Prajnesh v Dimitar Kuzmanov | 3-6,4-6 |
| Open d'Australie | 2021/01/12 13:10 | Gunneswaran, Prajnesh v Constant Lestienne | 2-6,3-6 |
| Open d'Australie | 2021/01/11 12:20 | Gunneswaran, Prajnesh v Schnur, Brayden | 6-4,4-6,6-2 |