Stadium: Court 3 Round: 25 Ground: Clay
| ITF M15 Kamen | 2019/06/25 15:30 | Alexander Erler v Ronald Slobodchikov | 4-6,6-7 |
| ITF M15 Balatonalmadi | 2019/06/19 09:55 | Fabian Marozsan v Alexander Erler | 6-2,6-2 |
| ITF M15 Kaltenkirchen | 2019/06/13 11:10 | Markus Eriksson v Alexander Erler | 6-0,6-7,6-4 |
| ITF M15 Kaltenkirchen | 2019/06/12 11:00 | Alexander Erler v Michael Vrbensky | 6-2,6-2 |
| ITF M15 Kaltenkirchen | 2019/06/11 08:00 | Alexander Erler v George Von Massow | 6-4,7-6 |
| ITF M15 Kalmar | 2019/05/14 12:10 | Alexander Erler v Vladimir Ivanov | 1-6,6-2,6-7 |
| ATP Munich | 2019/04/27 14:00 | Prajnesh Gunneswaran v Alexander Erler | 3-6,7-6,7-5 |
| ITF M15 Tabarka | 2019/03/26 12:15 | Pedro Vives Marcos v Alexander Erler | 7-5,6-2 |
| ITF M15 Kaltenkirchen | 2019/06/12 10:30 | Markus Eriksson v Niklas Guttau | 6-3,6-1 |
| ITF M15 Kaltenkirchen | 2019/06/11 18:25 | Niklas Guttau v Rinky Hijikata | 6-3,6-1 |
| ITF M15 Antalya | 2019/05/25 07:45 | Niklas Guttau v Christopher Heyman | 5-7,2-6 |
| ITF M15 Antalya | 2019/05/23 09:05 | Niklas Guttau v Adrian Obert | 4-6,6-4,7-6 |
| ITF M15 Antalya | 2019/05/22 11:30 | Paul Woerner v Niklas Guttau | 1-6,2-6 |
| ITF M15 Antalya | 2019/04/25 10:40 | Christopher Heyman v Niklas Guttau | 7-6,7-5 |
| ITF M15 Antalya | 2019/04/24 10:10 | Gorazd Srbljak v Niklas Guttau | 1-6,5-7 |
| ITF M15 Antalya | 2019/04/23 07:00 | Niklas Guttau v Michalis Sakellaridis | 6-1,6-1 |