Stadium: Court 4 Round: 54 Ground: Clay
| ITF M15 - Frederiksberg | 2021/08/05 08:00 | Sandro Kopp v Vasil Kirkov | 6-4,3-6,1-6 |
| ITF M15 - Frederiksberg | 2021/08/03 10:55 | Guy Den Ouden v Sandro Kopp | 4-6,4-6 |
| ITF M15 - Vejle | 2021/07/29 08:00 | Matias Zukas v Sandro Kopp | 6-3,6-1 |
| ITF M15 - Vejle | 2021/07/27 08:00 | Elmer Moller v Sandro Kopp | 0-6,5-7 |
| ITF M25 - Kottingbrunn | 2021/07/22 08:00 | Giovanni Fonio v Sandro Kopp | 6-1,7-5 |
| ITF M25 - Kottingbrunn | 2021/07/21 12:05 | Taiyo Yamanaka v Sandro Kopp | 1-6,2-6 |
| ITF M25 - Telfs | 2021/07/16 09:30 | Gonzalo Lama v Sandro Kopp | 6-1,6-2 |
| ITF M25 - Telfs | 2021/07/14 08:50 | Francisco Vittar v Sandro Kopp | 2-6,3-6 |
| ITF M25 - Wetzlar | 2021/08/02 08:00 | Yannick Wunderlich v Giles Hussey | 6-7,5-7 |
| ITF - M15 - Monastir | 2021/06/07 08:00 | Ko Suzuki v Yannick Wunderlich | 6-7,7-6,10-8 |
| ITF - M15 - Monastir | 2021/06/06 08:00 | Leonardo L Linquet v Yannick Wunderlich | 3-6,5-7 |
| ITF - M15 - Monastir | 2021/05/31 08:00 | Mauro De Maio v Yannick Wunderlich | 6-0,7-6 |
| ITF - M15 - Monastir | 2021/05/30 10:30 | Yannick Wunderlich v Skander Ben Abdallah | 6-0,6-1 |
| ITF - M15 - Monastir | 2021/05/24 08:00 | Uisung Park v Yannick Wunderlich | 6-4,6-3 |
| ITF - M15 - Monastir | 2021/05/23 09:00 | Yannick Wunderlich v Thomas George Brun | 6-1,6-3 |
| ITF - M15 - Monastir | 2021/03/29 09:00 | Yannick Wunderlich v Bradley Paliska | 3-6,4-6 |