Stadium: Court 1 Round: 19 Ground: Clay
| ITF Germany F2 | 2018/01/25 19:20 | Christopher Heyman v Elmar Ejupovic | 7-5,7-6 |
| ITF Germany F16 | 2014/10/13 07:30 | Christopher Heyman v Elmar Ejupovic | 7-6,6-7,6-1 |
| Challenger Poznan | 2021/07/25 10:50 | Alexey Vatutin v Elmar Ejupovic | 6-4,2-6,3-6 |
| Challenger Salzburg | 2021/07/05 09:30 | Nicolas Jarry v Elmar Ejupovic | 4-6,6-3,6-2 |
| Challenger Salzburg | 2021/07/04 08:00 | Elmar Ejupovic v Lucas Miedler | 7-6,4-6,7-6 |
| ITF M25 Bourg-en-Bresse | 2021/07/01 10:30 | Jakub Paul v Elmar Ejupovic | 7-6,6-2 |
| ITF M25 Bourg-en-Bresse | 2021/06/30 15:25 | Louis Dussin v Elmar Ejupovic | 3-6,2-6 |
| Challenger Milan | 2021/06/20 12:50 | Elmar Ejupovic v Jonas Forejtek | 0-6,6-3,4-6 |
| Challenger Forli | 2021/06/14 09:30 | Lucas Gerch v Elmar Ejupovic | 4-6,6-4,7-6 |
| Challenger Bratislava | 2021/06/06 12:20 | Elmar Ejupovic v Jonas Forejtek | 6-7,6-7 |
| Challenger Poznan | 2021/07/25 13:00 | Maks Kasnikowski v Christopher Heyman | 3-6,4-6 |
| ITF M25 Marburg | 2021/07/07 14:55 | Christopher Heyman v Henri Squire | 5-7,3-6 |
| ITF M25 The Hague | 2021/07/02 14:30 | Jelle Sels v Christopher Heyman | 6-3,6-0 |
| ITF M25 The Hague | 2021/07/01 11:40 | Christopher Heyman v Jesper De Jong | 6-4,7-5 |
| ITF M25 The Hague | 2021/06/30 12:15 | Raphael Collignon v Christopher Heyman | 1-6,7-6,3-6 |
| ITF M25 Alkmaar | 2021/06/26 13:35 | Nicolas Alvarez Varona v Christopher Heyman | 6-4,3-6,7-6 |
| ITF M25 Alkmaar | 2021/06/25 11:45 | Christopher Heyman v Gijs Brouwer | 6-4,6-4 |
| ITF M25 Alkmaar | 2021/06/24 09:00 | Kaichi Uchida v Christopher Heyman | 2-6,6-3,6-7 |