Stadium: Court 3 Oberhaching Round: 25 Ground: Hardcourt indoor
| ITF M15 Santo Domingo | 2021/12/09 15:25 | Colin Sinclair v Peter Bertran | 2-6,2-6 |
| ITF M15 Santo Domingo | 2021/12/08 18:05 | Colin Sinclair v Sebastian Gima | 6-3,6-2 |
| ITF M15 Guatemala | 2021/11/28 15:30 | Marco Brugnerotto v Colin Sinclair | 1-6,7-5,4-6 |
| ITF M15 Guatemala | 2021/11/27 17:35 | Colin Sinclair v Taha Baadi | 7-6,7-6 |
| ITF M15 Guatemala | 2021/11/26 15:30 | Alejandro Mendoza v Colin Sinclair | 3-6,7-6,2-6 |
| ITF M15 Guatemala | 2021/11/25 15:30 | Osgar O'Hoisin v Colin Sinclair | 2-6,3-6 |
| ITF M15 Guatemala | 2021/11/23 18:00 | Rafael Botran Neutze v Colin Sinclair | 3-6,1-6 |
| ITF M15 East Lansing | 2021/11/19 17:55 | Alex Knaff v Colin Sinclair | 7-6,5-7,6-2 |
| Challenger Forli Qual | 2022/01/09 12:00 | Alexey Vatutin v Alexander Weis | 6-4,6-2 |
| Challenger Forli | 2022/01/02 10:20 | Marco Miceli v Alexander Weis | 4-6,7-6,6-0 |
| Challenger Ortisei | 2021/11/09 17:55 | Marius Copil v Alexander Weis | 6-4,7-6 |
| ITF M15 Antalya | 2021/11/06 07:30 | Juan Pablo Paz v Alexander Weis | 7-6,6-3 |
| ITF M15 Antalya | 2021/11/05 07:00 | Mircea-Alexandru Jecan v Alexander Weis | 0-6,7-5,6-7 |
| ITF M15 Antalya | 2021/11/04 10:20 | Pavel Verbin v Alexander Weis | 1-6,1-6 |
| ITF M15 Antalya | 2021/10/28 07:00 | Alexander Weis v Rrezart Cungu | 4-6,5-7 |
| ITF M15 Antalya | 2021/10/27 10:25 | Alexander Weis v Richard Zusman | 6-3,2-6,6-3 |