Stadium: Court 3 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Monastir | 2021/09/08 08:00 | Skander Mansouri v Mwendwa Mbithi | 6-4,7-5 |
| ITF M15 Monastir | 2021/09/01 09:30 | Skander Mansouri v Mwendwa Mbithi | 6-2,2-6,7-6 |
| ITF M15 Monastir | 2021/08/25 07:30 | Luciano Darderi v Mwendwa Mbithi | 6-4,6-1 |
| ITF M15 Monastir | 2021/08/17 07:30 | Mwendwa Mbithi v Gabriele Bosio | 2-6,5-7 |
| ITF M15 Monastir | 2021/08/16 07:30 | Mwendwa Mbithi v Alan F R Fierros | 6-7,6-4,10-6 |
| ITF M15 Monastir | 2021/08/15 08:30 | Mwendwa Mbithi v Matas Vasiliauskas | 7-5,6-3 |
| ITF M15 Monastir | 2021/08/08 07:30 | Mwendwa Mbithi v Takuya Kumasaka | 6-2,6-7,2-10 |
| ITF M25 Weston | 2021/06/29 21:00 | Mwendwa Mbithi v Ben Shelton | 4-6,6-7 |
| ITF M15 Cancun | 2021/09/29 17:35 | Alfredo Perez v Colin Markes | 6-2,7-5 |
| ITF M15 Cancun | 2021/09/28 14:00 | Gabriel Roveri Sidney v Colin Markes | 1-6,4-6 |
| ITF M15 Cancun | 2021/09/27 14:30 | Colin Markes v Austin Ansari | 4-6,4-6 |
| ITF M15 Cancun | 2021/09/26 17:00 | Diego Bustamante v Colin Markes | 1-6,0-6 |
| ITF M15 Cancun | 2021/09/22 15:55 | Colin Markes v Christian Langmo | 6-7,6-4,2-6 |
| ITF M15 Cancun | 2021/09/21 14:00 | Colin Markes v Nikolas Moceanu | 6-3,6-2 |
| ITF M15 Cancun | 2021/09/20 14:00 | Colin Markes v Lance A L Castelan | 6-2,6-1 |
| ITF M15 Cancun | 2021/09/19 14:00 | Colin Markes v Enzo Frances Tessari | 6-1,6-3 |