Stadium: Court 3 Round: 14 Ground: Clay
| ITF M25 Santo Domingo | 2021/06/03 13:00 | Alejandro Gonzalez v Blaise Bicknell | 6-3,6-7,7-5 |
| ITF M25 Pensacola | 2021/05/21 14:30 | Alejandro Gonzalez v Patrick Kypson | 4-6,0-6 |
| ITF M25 Pensacola | 2021/05/20 14:25 | Juan A H Serrano v Alejandro Gonzalez | 3-6,2-6 |
| ITF M25 Pensacola | 2021/05/19 19:35 | John Bernard v Alejandro Gonzalez | 2-6,1-6 |
| Challenger Salinas 2 | 2021/04/26 19:40 | Tak Khunn Wang v Alejandro Gonzalez | 6-2,3-6,6-2 |
| Challenger Salinas | 2021/04/19 14:30 | Alejandro Gonzalez v Tak Khunn Wang | 2-6,6-1,0-6 |
| Challenger Salinas | 2021/04/18 19:10 | Alejandro Gonzalez v Jorge Panta | 6-0,6-1 |
| ATP Acapulco | 2021/03/15 00:00 | Denis Kudla v Alejandro Gonzalez | 6-3,6-2 |
| UTR Pro Tennis Series Copenhagen | 2021/06/16 08:00 | Alejandro Mendoza v Daniel De Jonge | 1-6,2-6 |
| UTR Pro Tennis Series Copenhagen | 2021/06/15 09:30 | Alejandro Mendoza v Oskar Brostrom Poulsen | 5-2 |
| UTR Pro Tennis Series California | 2021/02/27 17:30 | Alejandro Mendoza v Miles Jones | 4-6,1-6 |
| UTR Pro Tennis Series California | 2021/02/25 16:50 | Alejandro Mendoza v Ryan James Storrie | 1-6,1-6 |
| UTR Pro Tennis Series California | 2021/02/13 20:30 | Alejandro Mendoza v Karl Lee | 3-6,4-5 |
| UTR Pro Tennis Series California | 2021/02/11 22:00 | Alejandro Mendoza v Gage Brymer | 0-6,0-5 |
| ITF M15 Santo Domingo | 2020/12/07 14:00 | Alejandro Mendoza v Joaquin Caballer | 4-6,3-6 |
| ITF M15 Santo Domingo | 2020/12/01 13:30 | Alejandro Mendoza v Leonardo Civita-Telles | 1-6,1-6 |