Stadium: Court 9 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Sarreguemines | 2021/10/28 15:05 | Harold Mayot v Gabriel Decamps | 6-4,4-6,4-6 |
| ITF M25 Sarreguemines | 2021/10/26 17:30 | Hugo Schott v Gabriel Decamps | 3-6,5-7 |
| ITF M15 Sharm El Sheikh | 2021/10/15 08:00 | Lukas Pokorny v Gabriel Decamps | 2-6,6-3,6-1 |
| ITF M15 Sharm El Sheikh | 2021/10/14 10:35 | Gabriel Decamps v Marat Deviatiarov | 6-4,5-7,6-0 |
| ITF M15 Sharm El Sheikh | 2021/10/13 11:40 | Gabriel Decamps v Adam Bronka | 6-0,6-1 |
| ITF M15 Sharm El Sheikh | 2021/10/10 08:00 | Petr Hajek v Gabriel Decamps | 5-7,7-6,0-6 |
| ITF M15 Sharm El Sheikh | 2021/10/09 08:00 | Nathan Seateun v Gabriel Decamps | 6-4,2-6,1-6 |
| ITF M15 Sharm El Sheikh | 2021/10/07 10:00 | Gabriel Decamps v Neil Oberleitner | 6-3,6-3 |
| ITF M25 Rodez | 2021/10/15 09:55 | Yannick Mertens v Martin Damm | 3-6,2-6 |
| ITF M25 Rodez | 2021/10/14 07:55 | Jelle Sels v Yannick Mertens | 4-6,6-3,6-7 |
| ITF M25 Rodez | 2021/10/13 09:25 | Blake Ellis v Yannick Mertens | 4-6,7-6,1-6 |
| ITF M25 Nevers | 2021/10/08 13:55 | Alexey Vatutin v Yannick Mertens | 6-3,6-2 |
| ITF M25 Nevers | 2021/10/07 10:55 | Dane Sweeny v Yannick Mertens | 4-6,6-1,3-6 |
| Challenger Orleans | 2021/09/26 14:15 | Yannick Mertens v Matteo Viola | 1-6,4-6 |
| Challenger Biel | 2021/09/20 10:30 | Alexander Ritschard v Yannick Mertens | 6-2,6-1 |
| Challenger Biel | 2021/09/19 09:30 | Yannick Mertens v Elmar Ejupovic | 6-3,7-6 |