Stadium: Cancha 3 Round: 14 Ground: Hardcourt outdoor
| ITF M15 Cordoba | 2021/04/06 12:00 | Gonzalo Villanueva v Valerio Aboian | 6-7,3-6 |
| ITF M15 Cordoba | 2021/04/05 14:00 | Gonzalo Villanueva v Mateo Berne | 6-3,6-1 |
| ITF M15 Villa Maria | 2021/04/01 15:00 | Matheus P De Almeida v Gonzalo Villanueva | 6-4,6-3 |
| ITF M15 Villa Maria | 2021/03/31 13:00 | Luciano Carraro v Gonzalo Villanueva | 5-7,6-0,4-6 |
| Challenger Santiago | 2021/03/17 14:00 | Sebastian Baez v Gonzalo Villanueva | 7-5,6-2 |
| Challenger Santiago | 2021/03/16 13:00 | Andrea Collarini v Gonzalo Villanueva | 4-6,4-6 |
| Challenger Santiago | 2021/03/15 13:00 | Carlos Gomez-Herrera v Gonzalo Villanueva | 4-6,3-6 |
| Challenger Santiago | 2021/03/14 14:00 | Daniel Antonio Nunez v Gonzalo Villanueva | 6-3,3-6,6-7 |
| UTR Pro Tennis Series Cancun | 2021/04/04 13:00 | Felix Corwin v Wilson Leite | 6-3,4-6,6-3 |
| UTR Pro Tennis Series Cancun | 2021/04/03 13:00 | Felix Corwin v Gabriel Evans | 6-3,5-2 |
| UTR Pro Tennis Series Cancun | 2021/04/02 13:00 | Felix Corwin v Jorge Panta | 3-6,6-2,1-6 |
| UTR Pro Tennis Series Cancun | 2021/03/31 17:00 | Felix Corwin v Mateo Gomez | 6-3,5-1 |
| UTR Pro Tennis Series Cancun | 2021/03/30 15:00 | Felix Corwin v Drew Van Orderlain | 6-2,6-1 |
| UTR Pro Tennis Series Cancun | 2021/03/29 20:00 | Jose Antonio Rodriguez Rodriguez v Felix Corwin | 2-6,3-6 |
| Challenger Cleveland | 2021/03/16 23:40 | Felix Corwin v Brayden Schnur | 6-7,6-7 |
| Challenger Cleveland | 2021/03/15 15:45 | Felix Corwin v Martin Redlicki | 6-7,6-1,6-4 |