Stadium: Center Court Round: 27 Ground: Carpet indoor
| Challenger Ismaning | 2021/10/27 17:25 | Tim Van Rijthoven v Matthias Bachinger | 7-6,4-6,2-6 |
| Challenger Ismaning | 2021/10/26 10:00 | Altug Celikbilek v Matthias Bachinger | 3-6,1-6 |
| Challenger Ismaning | 2021/10/25 10:00 | Matthias Bachinger v Hiroki Moriya | 6-3,6-2 |
| Challenger Ismaning | 2021/10/24 10:35 | Matthias Bachinger v Michael Weindl | 6-1,6-3 |
| Challenger Biel | 2021/09/20 13:35 | Dennis Novak v Matthias Bachinger | 6-4,6-2 |
| Challenger Tulln | 2021/09/07 14:35 | Matthias Bachinger v Thiago Monteiro | 6-3,1-6,1-6 |
| Challenger Salzburg | 2021/07/05 13:40 | Hugo Gaston v Matthias Bachinger | 6-4,6-3 |
| ATP Mallorca | 2021/06/19 09:00 | Radu Albot v Matthias Bachinger | 6-4,4-6,7-5 |
| Challenger Ismaning | 2021/10/27 15:25 | Lukáš Lacko v Tomas Machac | 6-7,6-4,7-6 |
| Challenger Ismaning | 2021/10/25 13:35 | Marius Copil v Lukáš Lacko | 6-7,6-7 |
| Challenger Biel | 2021/09/21 16:00 | Lukáš Lacko v Henri Laaksonen | 5-7,2-6 |
| Challenger Mallorca | 2021/09/05 17:00 | Yasutaka Uchiyama v Lukáš Lacko | 7-5,6-7,1-6 |
| Challenger Mallorca | 2021/09/04 14:00 | Lukáš Lacko v Tobias Kamke | 6-0,6-3 |
| Challenger Mallorca | 2021/09/03 17:40 | Lukáš Lacko v Frederico Ferreira Silva | 7-5,7-5 |
| Challenger Mallorca | 2021/09/02 17:00 | Dimitar Kuzmanov v Lukáš Lacko | 2-6,6-7 |
| Challenger Mallorca | 2021/09/01 18:40 | Johannes Haerteis v Lukáš Lacko | 2-6,3-6 |