Stadium: TSITSIPAS COURT Round: 25 Ground: Hardcourt outdoor
| 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 Jonkoping | 2021/09/21 09:20 | Marvin Moeller v Harry Wendelken | 4-6,7-5,6-1 |
| ITF M25 Jonkoping | 2021/09/20 07:30 | Harry Wendelken v Eirik Groener | 6-2,6-1 |
| ITF M25 Poznan | 2021/08/26 14:15 | Felix Gill v Harry Wendelken | 6-1,6-4 |
| ITF M25 Poznan | 2021/08/25 10:00 | Harry Wendelken v Gilbert S K Junior | 3-6,6-4,6-2 |
| ITF M25 Poznan | 2021/08/24 16:10 | Harry Wendelken v Fermin Calvo Barcelo | 6-2,6-3 |