Stadium: Cancha 3 Round: 26 Ground: Clay
| ITF M25 Decatur | 2021/08/04 20:30 | Gonzalo Villanueva v Petros Chrysochos | 1-6,3-6 |
| Challenger Lexington | 2021/07/25 17:00 | Aidan Mchugh v Gonzalo Villanueva | 7-5,2-6,6-3 |
| Challenger Cary | 2021/07/20 15:00 | Roberto Cid Subervi v Gonzalo Villanueva | 3-6,7-5,6-1 |
| UTR Pro Tennis Series Atlanta | 2021/07/16 12:00 | Ivan Yatsuk v Gonzalo Villanueva | 6-1,6-4 |
| UTR Pro Tennis Series Atlanta | 2021/07/15 18:00 | William Mroz Mroz v Gonzalo Villanueva | 3-6,4-5 |
| UTR Pro Tennis Series Atlanta | 2021/07/12 13:30 | Vazha Shubladze v Gonzalo Villanueva | 6-1,6-2 |
| UTR Pro Tennis Series Atlanta | 2021/07/10 13:30 | Gonzalo Villanueva v Andrew Rogers | 6-2,3-6,4-5 |
| UTR Pro Tennis Series Atlanta | 2021/07/08 12:00 | Gonzalo Villanueva v Jorge Panta | 6-3,6-1 |
| ITF M15 Novi Sad | 2021/08/02 09:30 | Franco Roncadelli v Millen Hurrion | 3-6,4-6 |
| ITF M15 Novi Sad | 2021/08/01 12:45 | Goran Zivotic v Franco Roncadelli | 0-6,0-6 |
| ITF M15 Novi Sad | 2021/07/26 07:30 | Franco Roncadelli v Lazar Milicevic | 7-6,4-6,5-10 |
| ITF M15 Novi Sad | 2021/07/25 07:00 | Milan Drinic v Franco Roncadelli | 5-7,3-6 |
| ITF M15 Sofia | 2021/07/05 11:30 | Leonid Sheyngezikht v Franco Roncadelli | 6-2,6-2 |
| ITF M15 Sofia | 2021/07/05 07:00 | Franco Roncadelli v Nikola Kolyachev | 6-4,6-1 |
| ITF M15 Sofia | 2021/07/04 07:30 | Franco Roncadelli v Alessandro Procopio | 6-2,6-3 |
| ITF M15 Antalya | 2021/06/28 09:25 | Francisco Llanes v Franco Roncadelli | 3-6,7-5,10-7 |