Stadium: Cancha Central Round: 25 Ground: Clay
| 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 |
| ITF M25 Lima | 2021/10/05 15:00 | Alvaro Guillen Meza v Oriol Roca Batalla | 2-6,7-5,5-7 |
| Challenger Ambato | 2021/09/19 16:20 | Alvaro Guillen Meza v Patrick Kypson | 3-6,3-6 |
| Challenger Quito | 2021/09/14 16:55 | Gonzalo Lama v Alvaro Guillen Meza | 7-5,4-6,6-2 |
| Challenger Las Vegas | 2021/10/24 17:00 | Donald Young v Darian King | 6-3,3-6,6-4 |
| ATP San Diego | 2021/09/26 20:05 | Darian King v Christopher Eubanks | 6-7,5-7 |
| ATP San Diego | 2021/09/26 01:30 | Lucas Gomez v Darian King | 2-6,6-3,1-6 |
| Challenger Columbus | 2021/09/21 18:40 | Gijs Brouwer v Darian King | 7-6,6-0 |
| Davis Cup | 2021/09/18 16:45 | Darian King v Justin Barki | 6-2,6-4 |
| ATP Winston-Salem | 2021/08/21 20:40 | Lucas Pouille v Darian King | 6-7,6-4,6-4 |
| Challenger Lexington | 2021/07/30 20:00 | Ernesto Escobedo v Darian King | 7-5,6-0 |
| Challenger Lexington | 2021/07/29 01:05 | Darian King v Maxime Cressy | 4-6,7-6,6-2 |