| ITF M15 Heraklion | 2019/11/07 09:00 | Alexander Erler v Lenny Hampel | 6-3,6-4 |
| ITF Austria F1 | 2017/07/05 12:00 | Lenny Hampel v Alexander Erler | 4-6,6-4,6-3 |
| ITF M15 Heraklion | 2019/11/28 09:30 | Lenny Hampel v Matija Pecotic | 6-3,4-6,2-6 |
| ITF M15 Heraklion | 2019/11/27 14:30 | Ioannis Xilas v Lenny Hampel | 4-6,1-6 |
| ITF M15 Heraklion | 2019/11/22 09:30 | Vasil Kirkov v Lenny Hampel | 7-6,4-6,6-3 |
| ITF M15 Heraklion | 2019/11/21 08:00 | Lenny Hampel v Alexandar Lazarov | 6-4,7-5 |
| ITF M15 Heraklion | 2019/11/20 12:10 | Martin Dimitrov v Lenny Hampel | 1-6,1-6 |
| ITF M15 Heraklion | 2019/11/14 09:00 | Yshai Oliel v Lenny Hampel | 6-1,2-6,6-2 |
| ITF M15 Heraklion | 2019/11/07 09:00 | Alexander Erler v Lenny Hampel | 6-3,6-4 |
| ITF M15 Heraklion | 2019/11/06 12:55 | Simon A Ivanov v Lenny Hampel | 6-7,0-6 |
| ITF M15 Heraklion | 2020/02/13 08:30 | Mattia Bellucci v Alexander Erler | 6-2,6-4 |
| ITF M15 Heraklion | 2020/02/12 13:10 | Valentin Guenther v Alexander Erler | 4-6,6-2,4-6 |
| ITF M15 Veigy-Foncenex | 2020/01/28 09:00 | Alexander Erler v Mats Rosenkranz | 3-6,7-6,2-6 |
| ITF M25 Nussloch | 2020/01/23 11:30 | Alexander Erler v Stefan Seifert | 4-6,3-6 |
| ITF M15 Heraklion | 2019/11/17 08:30 | Alexander Erler v Jan Zielinski | 7-5,6-1 |
| ITF M15 Heraklion | 2019/11/16 12:00 | Yshai Oliel v Alexander Erler | 4-6,6-2,1-6 |
| ITF M15 Heraklion | 2019/11/16 08:00 | Alexander Erler v Nikita Mashtakov | 6-1,3-6,6-3 |
| ITF M15 Heraklion | 2019/11/15 08:00 | Alexander Erler v Billy Harris | 6-3,3-6,6-4 |