Estádio: Center Court Round: 14 Ground: Clay
| Challenger - Salzburgo | 2021/07/06 10:10 | Alexey Vatutin v Alexander Erler | 2-6,6-4,6-2 |
| Challenger - Salzburgo | 2021/07/05 09:00 | Jeroen Vanneste v Alexander Erler | 4-6,2-6 |
| Challenger - Salzburgo | 2021/07/04 09:15 | Sadio Doumbia v Alexander Erler | 6-7,5-7 |
| ITF - M25 Klosters | 2021/06/24 07:00 | Alexander Erler v Nicolas Moreno De Alboran | 1-6,5-7 |
| ITF - M25 Klosters | 2021/06/23 07:00 | Alexander Erler v Yannik Steinegger | 6-7,6-2,6-1 |
| Challenger - Prostejov | 2021/06/16 10:05 | Dalibor Svrcina v Alexander Erler | 6-1,7-5 |
| Challenger - Prostejov | 2021/06/14 08:30 | Alexander Erler v Pavel Nejedly | 7-5,6-3 |
| Challenger - Prostejov | 2021/06/13 11:10 | Alexander Erler v Jakub Mensik | 6-3,6-4 |
| ITF - M15 Helsínquia | 2021/06/02 06:30 | Eero Vasa v Clement Tabur | 3-6,3-6 |
| ITF - M15 Kouvola | 2021/05/27 07:00 | Lorenzo Rottoli v Eero Vasa | 6-3,6-1 |
| ITF - M15 Kouvola | 2021/05/26 11:45 | Alafia Ayeni v Eero Vasa | 5-7,2-6 |
| ITF - M15 Bratislava | 2021/03/09 12:00 | Eero Vasa v Amaury Raynel | 3-6,3-6 |
| ITF - M15 Bratislava | 2021/03/01 09:00 | Eero Vasa v Peter Nad | 5-7,6-3,8-10 |
| ITF - M15 Parnu | 2020/11/04 09:40 | Vladimir Ivanov v Eero Vasa | 1-6,7-5,6-0 |
| ITF - M15 Setúbal | 2020/10/05 13:00 | Joao Lucas Reis da Silva v Eero Vasa | 3-6,7-5,11-9 |
| ITF - M15 Setúbal | 2020/10/05 09:00 | Eero Vasa v Davide Galoppini | 2-6,7-5,11-9 |