| ITF M25 - Klosters | 06/23 07:00 | 25 | Alexander Erler v Yannik Steinegger | 6-7,6-2,6-1 | |
| Challenger Prostejov | 06/16 10:05 | 26 | Dalibor Svrcina v Alexander Erler | 6-1,7-5 | |
| Challenger Prostejov | 06/15 08:30 | 25 | [354] Alexander Erler v Juan Manuel Cerundolo [141] | Retired | |
| Challenger Prostejov | 06/14 08:30 | 19 | Alexander Erler v Pavel Nejedly | 7-5,6-3 | |
| Challenger Prostejov | 06/13 11:10 | 14 | Alexander Erler v Jakub Mensik | 6-3,6-4 | |
| ITF M25 - Most | 05/27 07:55 | 26 | [357] Alexander Erler v Franco Agamenone [483] | 4-6,0-6 | |
| ITF M25 - Most | 05/25 09:35 | 25 | Alexander Erler v Jean Thirouin | 7-5,7-6 | |
| ITF M15 - Antalya | 05/16 07:30 | 29 | Alexander Erler v Nick Hardt | 0-6,6-7 | |
| ITF M15 - Antalya | 05/15 07:30 | 28 | [333] Orlando Luz v Alexander Erler [381] | 6-4,6-7,2-6 | |
| ITF M15 - Antalya | 05/14 09:50 | 27 | [381] Alexander Erler v Timofey Skatov [442] | 4-6,6-2,6-1 | |
| ITF M15 - Antalya | 05/13 11:40 | 26 | Alexander Erler v Vladimir Ivanov | 5-7,6-3,6-1 | |
| ITF M15 - Antalya | 05/12 11:35 | 25 | Alexander Erler v Antonio Massara | 6-3,6-2 | |
| ITF M15 - Antalya | 05/09 08:50 | 29 | [386] Alexander Erler v Adrian Andreev [379] | 6-4,6-1 | |
| ITF M15 - Antalya | 05/08 07:30 | 28 | [331] Orlando Luz v Alexander Erler [386] | 5-7,6-7 | |
| ITF M15 - Antalya | 05/07 07:00 | 27 | [386] Alexander Erler v Nick Hardt [500] | 7-6,6-0 | |
| ITF M15 - Antalya | 05/06 07:00 | 26 | Alexander Erler v Cheong-Eui Kim | 6-4,3-6,6-3 | |
| ITF M15 - Antalya | 05/05 08:25 | 25 | Alexander Erler v Vito Dell'Elba | 6-0,6-0 | |
| ITF M15 - Sibenik | 04/23 08:00 | 27 | Sebastian Prechtel v Alexander Erler | 6-4,6-4 | |
| ITF M15 - Sibenik | 04/22 10:15 | 26 | Marco Miceli v Alexander Erler | 1-6,4-6 | |
| ITF M15 - Sibenik | 04/21 13:20 | 25 | Gorazd Srbljak v Alexander Erler | 1-6,2-6 | |
| ITF M25 - Meerbusch | 04/18 11:30 | 29 | Alexander Erler v Arthur Cazaux | 6-2,4-6,7-5 | |
| ITF M25 - Meerbusch | 04/17 12:55 | 28 | [461] Elmar Ejupovic v Alexander Erler [427] | 3-6,4-6 | |
| ITF M25 - Meerbusch | 04/16 09:00 | 27 | Milan Welte v Alexander Erler | 1-6,4-6 | |
| ITF M25 - Meerbusch | 04/15 10:00 | 26 | [427] Alexander Erler v Yannick Mertens [475] | 6-3,3-6,6-1 | |
| ITF M25 - Meerbusch | 04/14 10:30 | 25 | Alexander Erler v Marvin Netuschil | 6-3,6-2 | |
| ITF M25 - Biel | 03/30 08:00 | 54 | Alexander Erler v Kilian Feldbausch | 4-6,6-3,5-10 | |
| ITF M25 - Biel | 03/29 08:00 | 54 | Alexander Erler v Mischa Lanz | 6-3,6-4 | |
| Challenger Lugano | 03/21 11:50 | 14 | [331] Tim Van Rijthoven v Alexander Erler [432] | 7-6,6-0 | |
| ITF M25 - Trimbach | 03/12 09:55 | 27 | [480] Elmar Ejupovic v Alexander Erler [431] | 7-6,6-7,6-3 | |
| ITF M25 - Trimbach | 03/11 10:00 | 26 | Quentin Folliot v Alexander Erler | 4-6,3-6 |