Stadium: Court 7 Round: 25 Ground: Hardcourt outdoor
| 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 |
| ITF M15 East Lansing | 2021/11/18 18:00 | Alexandre Rotsaert v Colin Sinclair | 5-7,6-4,2-6 |
| ITF M15 East Lansing | 2021/11/17 20:45 | Nico Mostardi v Colin Sinclair | 3-6,4-6 |
| ITF M15 Santo Domingo | 2021/12/02 19:10 | Johannes Ingildsen v Sebastian Gima | 7-6,4-6,6-4 |
| ITF M15 Santo Domingo | 2021/11/30 15:00 | Sebastian Gima v Connor Farren | 7-6,6-3 |
| ITF M15 East Lansing | 2021/11/19 20:00 | Raymond Sarmiento v Sebastian Gima | 6-2,6-4 |
| ITF M15 East Lansing | 2021/11/18 22:20 | Ozan Baris v Sebastian Gima | 6-1,4-6,4-6 |
| ITF M15 East Lansing | 2021/11/16 21:00 | Alexander Bernard v Sebastian Gima | 6-7,4-6 |
| ITF M15 Antalya | 2021/11/02 06:00 | Sebastian Gima v Matias P D L Gomila | 3-6,4-6 |
| ITF M15 Antalya | 2021/10/31 07:00 | Sebastian Gima v Ignacio Cuzzani | 6-2,6-4 |
| ITF M15 Antalya | 2021/10/26 07:20 | Sebastian Gima v Aliaksandr Bulitski | 5-7,2-6 |