Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Santo Domingo | 2021/12/09 13:30 | Colin Markes v Alexis Musialek | 1-6,4-6 |
| ITF M15 Santo Domingo | 2021/12/08 13:30 | Johannes Ingildsen v Colin Markes | 7-6,6-7,6-7 |
| ITF M15 Santo Domingo | 2021/12/02 16:15 | Peter Bertran v Colin Markes | 6-3,6-7,6-4 |
| ITF M15 Santo Domingo | 2021/12/01 16:50 | Yasha Zemel v Colin Markes | 3-6,4-6 |
| ITF M25 Santo Domingo | 2021/11/30 13:00 | Colin Markes v Jesus M Rosario | 6-1,6-2 |
| ITF M25 Santo Domingo | 2021/11/29 15:00 | Colin Markes v Rafael Abdul Salam | 6-2,6-4 |
| ITF M25 Austin | 2021/11/20 18:45 | Eduardo Nava v Colin Markes | 7-6,6-1 |
| ITF M25 Austin | 2021/11/19 16:55 | Colin Markes v Kareem Allaf | 6-2,4-6,7-6 |
| ITF M15 Santo Domingo | 2021/12/07 16:35 | Jack Anthrop v Ignacio B Alia | 6-4,4-6,6-3 |
| ITF M25 Madrid | 2021/10/24 09:30 | Ignacio B Alia v Ilya Rudiukov | 2-6,4-6 |
| ITF M25 Madrid | 2021/09/13 08:30 | Ignacio B Alia v Xavi Matas Ortega | 1-6,4-6 |
| ITF M15 Monastir | 2021/09/05 09:30 | Ignacio B Alia v Tomohiro Masabayashi | 3-6,4-6 |
| ITF M25 Oviedo | 2021/08/29 08:00 | Diego A B Sanchez v Ignacio B Alia | 6-0,6-1 |
| ITF M25 Guayaquil | 2021/08/02 14:00 | Ignacio B Alia v Juan Diego Rojas Mora | 6-3,1-6,9-11 |
| ITF M25 Portoviejo | 2021/07/26 14:30 | Ignacio B Alia v Cristobal Castro | 3-6,4-6 |
| ITF M25 Portoviejo | 2021/07/25 14:30 | Luca Moro Almeida v Ignacio B Alia | 2-6,5-7 |