Stadium: Court 1 Round: 26 Ground: Clay
| ITF M15 Doha Qual | 2021/12/19 19:20 | Leyton Rivera v Aleksandar Tomas | 4-6,2-6 |
| ITF M15 Doha | 2021/12/15 17:50 | Petru-Alexandru Luncanu v Leyton Rivera | 2-6,6-2,6-0 |
| ITF M15 Doha | 2021/12/14 12:00 | Haoyuan Huang v Leyton Rivera | 6-7,4-6 |
| ITF M15 Doha | 2021/12/13 14:25 | Leyton Rivera v Luca Sanchez | 7-6,6-4 |
| ITF M15 Doha | 2021/12/12 12:00 | Leyton Rivera v Tathagat Charantimath | 6-2,7-6 |
| ITF M15 Ostrava | 2021/11/22 09:00 | Scott Duncan v Leyton Rivera | 3-6,6-4,10-8 |
| ITF M15 Ostrava | 2021/11/21 12:00 | Leyton Rivera v Daniel Paty | 6-3,6-1 |
| ITF M15 Opava | 2021/11/15 10:40 | Dominik Recek v Leyton Rivera | 6-2,6-4 |
| ITF M15 Cundinamarca | 2021/11/18 16:10 | Alvaro Guillen Meza v Mateo Gomez | 6-2,3-6,2-6 |
| ITF M15 Cundinamarca | 2021/11/16 14:30 | Felipe Santamaria v Alvaro Guillen Meza | 1-6,1-6 |
| Challenger Guayaquil | 2021/11/01 22:00 | Alvaro Guillen Meza v Darian King | 6-0,3-6,4-6 |
| ITF M25 Guayaquil | 2021/10/28 15:00 | Oliver Crawford v Alvaro Guillen Meza | 6-3,6-2 |
| ITF M25 Guayaquil | 2021/10/26 18:00 | Alvaro Guillen Meza v Enrique Ordonez | 6-0,6-0 |
| ITF M25 Lima | 2021/10/14 15:00 | Alvaro Guillen Meza v Oriol Roca Batalla | 4-6,2-6 |
| ITF M25 Lima | 2021/10/12 16:35 | Boris Arias v Alvaro Guillen Meza | 6-7,3-6 |
| ITF M25 Lima | 2021/10/11 15:00 | Alvaro Guillen Meza v Jorge Jorge | 6-0,6-1 |