Stadium: Court 3 Round: 44 Ground: Clay
| ITF M15 Chornomorsk | 2021/08/30 07:00 | Maik Steiner v Myroslav Bondar | 6-4,6-0 |
| ITF M15 Chornomorsk | 2021/08/29 09:30 | Maik Steiner v Massimo Brambati | 6-0,4-6,10-6 |
| ITF M15 Huy | 2021/08/25 11:00 | Arnaud Bovy v Maik Steiner | 7-5,0-6,6-3 |
| ITF M15 Huy | 2021/08/24 08:00 | Maik Steiner v Niels P Van Noord | 6-1,6-1 |
| ITF M15 Huy | 2021/08/23 13:50 | Maik Steiner v Sebastian Santibanez | 6-3,6-0 |
| ITF M15 Huy | 2021/08/22 07:45 | Maik Steiner v Max Van Nunen | 6-3,6-3 |
| ITF M25 Marburg | 2021/07/07 09:00 | Maik Steiner v Arnaud Bovy | 6-3,6-7,6-7 |
| ITF M25 Marburg | 2021/07/06 12:30 | Christoph Negritu v Maik Steiner | 7-6,5-7,8-10 |
| ITF M15 Chornomorsk | 2021/08/30 07:00 | Ainius Sabaliauskas v Alexey Dubinin | 6-1,6-1 |
| ITF M15 Chornomorsk | 2021/08/29 09:30 | Ainius Sabaliauskas v Mykyta Rassolov | 6-1,6-2 |
| ITF M15 Vilnius | 2019/07/10 10:30 | Ainius Sabaliauskas v Savriyan Danilov | 3-6,3-6 |
| ITF Lithuania F1 | 2018/07/21 10:00 | Ainius Sabaliauskas v Matas Vasiliauskas | 4-6,4-6 |
| Davis Cup | 2018/02/04 11:55 | Ainius Sabaliauskas v Jurgen Zopp | 0-6,1-6 |