Stadium: Court 2 Round: 62 Ground: Hardcourt outdoor
| ITF M25 - Quinta Do Lago | 2021/10/17 12:00 | Harry Wendelken v Valentino De Pellegrin | 6-0,7-6 |
| ITF M25 - Loule | 2021/10/13 09:30 | Elliot Benchetrit v Harry Wendelken | 2-6,6-0,6-4 |
| ITF M25 - Loule | 2021/10/12 09:30 | Harry Wendelken v Tim Loosen | 6-0,6-2 |
| ITF M25 - Loule | 2021/10/11 10:30 | Harry Wendelken v Jesus Echevarri | 6-1,6-2 |
| ITF M25 - Setubal | 2021/10/04 10:00 | Harry Wendelken v Alberto Morolli | 3-6,6-7 |
| ITF M25 - Falun | 2021/09/29 12:30 | Daniel Little v Harry Wendelken | 6-3,6-3 |
| ITF M25 - Falun | 2021/09/28 13:45 | Lucas Renard v Harry Wendelken | 4-6,6-4,4-6 |
| ITF M25 - Falun | 2021/09/27 07:50 | Harry Wendelken v Iiro Vasa | 6-7,6-1,16-14 |
| ITF M25 - Quinta Do Lago | 2021/10/18 14:05 | Illia Stoliar v Tim Heger | 2-6,0-6 |
| ITF M25 - Loule | 2021/10/12 11:00 | Tim Heger v Miguel Gomes | 3-6,0-6 |
| ITF M25 - Loule | 2021/10/11 13:30 | Tim Heger v Lennart Melzer | 6-1,6-2 |
| ITF M25 - Setubal | 2021/10/06 10:00 | Tim Heger v Henrique Rocha | 2-6,6-4,2-6 |
| ITF M25 - Setubal | 2021/10/05 10:00 | Tim Heger v Diogo Morais | 6-1,6-1 |
| ITF M25 - Setubal | 2021/10/04 13:30 | Tim Heger v Tomas C Abasolo | 6-4,6-3 |
| ITF M25 - Ueberlingen | 2021/08/18 08:00 | Tim Heger v Oriol Roca Batalla | 0-6,6-2,3-6 |
| ITF M25 - Ueberlingen | 2021/08/17 07:55 | Tim Heger v Tudor S Gheorghita | 6-1,6-3 |