Stadium: Court 5 Round: 25 Ground: Clay
| ITF - M15 Antalya | 2021/05/09 08:50 | Erler, Alexander v Adrian Andreev | 6-4,6-1 |
| ITF - M15 Antalya | 2021/05/08 07:30 | Orlando Luz v Erler, Alexander | 5-7,6-7 |
| ITF - M15 Antalya | 2021/05/07 07:00 | Erler, Alexander v Nick Hardt | 7-6,6-0 |
| ITF - M15 Antalya | 2021/05/06 07:00 | Erler, Alexander v Kim, Cheong-Eui | 6-4,3-6,6-3 |
| ITF - M15 Antalya | 2021/05/05 08:25 | Erler, Alexander v Vito Dell'Elba | 6-0,6-0 |
| Sibenik, Singles M-ITF-CRO-05A | 2021/04/23 08:00 | Prechtel, Sebastian v Erler, Alexander | 6-4,6-4 |
| Sibenik, Singles M-ITF-CRO-05A | 2021/04/22 10:15 | Marco Miceli v Erler, Alexander | 1-6,4-6 |
| Sibenik, Singles M-ITF-CRO-05A | 2021/04/21 13:20 | Gorazd Srbljak v Erler, Alexander | 1-6,2-6 |
| ITF - M15 Antalya | 2021/05/03 07:00 | Gerald Melzer v Antonio Massara | 6-2,6-3 |
| ITF - M15 Antalya | 2021/05/02 06:00 | Arvid Nordquist v Antonio Massara | 5-7,2-6 |
| ITF - M15 Antalya | 2021/04/16 07:00 | Galoppini, Davide v Antonio Massara | 6-3,6-1 |
| ITF - M15 Antalya | 2021/04/15 08:20 | Antonio Massara v Basso, Andrea | 6-7,6-1,6-4 |
| ITF - M15 Antalya | 2021/04/14 11:05 | Antonio Massara v Samuel Vincent Ruggeri | 6-1,6-3 |
| ITF - M15 Antalya | 2021/04/13 08:15 | Taiyo Yamanaka v Antonio Massara | 2-6,6-4,12-14 |
| ITF - M15 Antalya | 2021/04/08 09:20 | Antonio Massara v Eremin, Edoardo | 3-6,4-6 |
| ITF - M15 Antalya | 2021/04/07 07:00 | Toledo Bague, Pol v Antonio Massara | 6-3,3-6,1-6 |