Stadium: Court 21 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Portimao | 2021/10/25 09:00 | Romios, Matthew Christopher v Donarski, Sid | 6-2,4-6,3-10 |
| ITF - M25 Quinta Do Lago | 2021/10/20 15:15 | Veldheer, Mick v Romios, Matthew Christopher | 6-2,4-6,6-1 |
| ITF M15 Sozopol | 2021/10/13 09:00 | Yanaki Milev v Romios, Matthew Christopher | 2-6,7-5,15-13 |
| ITF M15 Ulcinj | 2021/09/22 10:05 | Gianmarco Ferrari v Romios, Matthew Christopher | 6-3,7-5 |
| ITF M15 Ulcinj | 2021/09/14 08:00 | Felix Gill v Romios, Matthew Christopher | 6-3,3-6,6-4 |
| ITF M15 Allershausen | 2021/09/02 09:00 | Manish Sureshkumar v Romios, Matthew Christopher | 6-1,5-7,6-3 |
| ITF M15 Allershausen | 2021/09/01 09:00 | Bulitski, Aliaksandr v Romios, Matthew Christopher | 4-6,6-7 |
| ITF M25 Trier | 2021/08/24 10:00 | Romios, Matthew Christopher v Veldheer, Mick | 1-6,0-6 |
| ITF - M15 Héraklion | 2021/11/02 07:00 | Hoeveler, Leon v Axel Bergdahl | 7-6,7-6 |
| ITF M25 Hamburg | 2021/10/17 10:35 | Dhoe, Benjamin v Hoeveler, Leon | 4-6,6-1,10-6 |
| ITF M15 Forbach | 2021/09/27 08:00 | Cyril Vandermeersch v Hoeveler, Leon | 6-3,6-1 |
| ITF M15 Forbach | 2021/09/26 09:55 | Raphael Vaksmann v Hoeveler, Leon | 3-6,1-6 |
| ITF M25 Eupen | 2021/09/06 09:55 | Thomas Deschamps v Hoeveler, Leon | 6-1,6-3 |
| ITF M25 Eupen | 2021/09/05 12:00 | Hoeveler, Leon v Alen Moritz Hodzic | 6-3,0-6,11-9 |
| ITF M15 Huy | 2021/08/23 15:05 | Sollie, Thorsten v Hoeveler, Leon | 6-4,7-5 |
| ITF M15 Huy | 2021/08/22 12:50 | Hoeveler, Leon v Roland Stuurman | 6-3,6-3 |