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