Stadium: Court 1 N Round: 25 Ground: Hardcourt outdoor
| ITF M25 Tulsa | 2021/06/17 13:55 | Gonzalo Villanueva v Gage Brymer | 4-6,3-6 |
| ITF M25 Tulsa | 2021/06/16 16:30 | Adrian Andreev v Gonzalo Villanueva | 6-2,3-6,4-6 |
| Challenger Orlando | 2021/06/06 16:10 | Adrian Andreev v Gonzalo Villanueva | 3-6,6-3,7-6 |
| Challenger Little Rock | 2021/05/30 20:10 | Zachary Svajda v Gonzalo Villanueva | 6-0,5-7,6-2 |
| Challenger Salinas 2 | 2021/04/29 15:00 | Gonzalo Villanueva v JC Aragone | 2-6,2-6 |
| Challenger Salinas 2 | 2021/04/28 16:30 | Gonzalo Villanueva v Hernan Casanova | 7-5,6-0 |
| Challenger Salinas 2 | 2021/04/27 14:30 | Gonzalo Villanueva v David Poljak | 5-7,7-6,7-6 |
| Challenger Salinas | 2021/04/19 14:30 | Gonzalo Villanueva v Nicolas Mejia | 3-6,0-6 |
| ITF USA F12 Qual | 2017/04/01 13:30 | Filipp Kekercheni v Kweisi Kenyatte | 6-3,6-1 |