Stadium: CAMPO MBM Round: 14 Ground: Clay
| Challenger - Manama | 2021/11/23 11:40 | Johannes Haerteis v Alexander Erler | 6-3,6-4 |
| Challenger - Eckental | 2021/11/02 13:15 | Henri Squire v Alexander Erler | 7-6,2-6,7-6 |
| Challenger - Eckental | 2021/11/01 10:00 | Alexander Erler v Henri Squire | 4-6,2-6 |
| Challenger - Eckental | 2021/10/31 10:35 | Alexander Erler v Artem Dubrivnyy | 6-1,6-3 |
| ATP - Viedeň | 2021/10/23 09:00 | Alexander Erler v Gianluca Mager | 7-6,2-6,4-6 |
| Challenger - Bukurešť | 2021/09/20 11:20 | Vitaliy Sachko v Alexander Erler | 6-2,6-2 |
| Challenger - Tulln | 2021/09/06 12:10 | Alexander Erler v Lukáš Rosol | 4-6,7-5,1-6 |
| Challenger - Como | 2021/08/31 08:00 | Riccardo Bonadio v Alexander Erler | 3-6,6-3,6-3 |
| ITF - M15 Naí Dillí | 2021/11/21 05:30 | Valentin Vacherot v Philip Sekulic | 5-7,6-2,7-6 |
| ITF - M15 Naí Dillí | 2021/11/20 07:45 | Vishnu Vardhan v Valentin Vacherot | 1-6,1-6 |
| ITF - M15 Naí Dillí | 2021/11/19 04:30 | Valentin Vacherot v Abhinav Sanjeev Shanmugam | 6-1,6-3 |
| ITF - M15 Naí Dillí | 2021/11/18 04:00 | Valentin Vacherot v Zsombor Velcz | 6-3,6-2 |
| ITF - M15 Naí Dillí | 2021/11/17 03:50 | Valentin Vacherot v Rishi Reddy | 6-3,6-0 |
| ITF - M15 Monastir | 2021/10/27 17:15 | James McCabe v Valentin Vacherot | 7-5,6-4 |
| ITF - M15 Monastir | 2021/10/24 08:30 | Moerani Bouzige v Valentin Vacherot | 6-4,7-5 |
| ITF - M15 Monastir | 2021/10/21 08:30 | Valentin Vacherot v Simon Beaupain | 7-6,6-1 |