Stadium: Court 09 Round: 25 Ground: Hardcourt outdoor
| UTR Pro Tennis Series - California | 2021/08/24 20:00 | Colin Markes v Alfredo Perez | 3-6,5-6 |
| ITF M25 Fort Worth | 2019/10/21 15:00 | Colin Markes v Alfredo Perez | 4-6,0-6 |
| UTR Pro Tennis Series - California | 2021/08/28 18:00 | Alfredo Perez v Tristan Boyer | 6-3,2-6,5-7 |
| UTR Pro Tennis Series - California | 2021/08/27 15:00 | Alfredo Perez v Timothy Sah | 6-3,6-2 |
| UTR Pro Tennis Series - California | 2021/08/24 20:00 | Colin Markes v Alfredo Perez | 3-6,5-6 |
| UTR Pro Tennis Series - California | 2021/08/23 23:15 | Keenan Mayo v Alfredo Perez | 3-6,1-6 |
| UTR Pro Tennis Series - California | 2021/08/22 16:30 | Alfredo Perez v Warren Wood | 6-3,6-4 |
| ITF M25 Decatur | 2021/08/05 18:35 | Eliot Spizzirri v Alfredo Perez | 5-7,6-1,6-1 |
| ITF M25 Decatur | 2021/08/04 18:05 | Alfredo Perez v Shuichi Sekiguchi | 6-1,7-6 |
| ITF M25 Champaign | 2021/07/30 15:00 | Yu Hsiou Hsu v Alfredo Perez | 3-6,6-1,6-3 |
| 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 |
| UTR Pro Tennis Series Dallas | 2021/09/05 13:00 | Tadeas Paroulek v Colin Markes | 6-3,6-2 |