Stadium: Court 1 Round: 25 Ground: Clay
| Challenger Santiago | 2019/03/06 14:00 | Gonzalo Villanueva v Federico Gaio | 6-3,3-6,3-6 |
| Challenger Santiago | 2019/03/05 14:00 | Alexandre Muller v Gonzalo Villanueva | 6-4,6-7,1-6 |
| Challenger Santiago | 2019/03/04 14:00 | Gonzalo Villanueva v Amador Salazar | 6-3,6-1 |
| Challenger Morelos | 2019/02/19 17:20 | Manuel Sanchez v Gonzalo Villanueva | 6-3,6-3 |
| Challenger Morelos | 2019/02/18 16:00 | Evan Furness v Gonzalo Villanueva | 6-2,6-7,1-6 |
| Challenger Punta del Este | 2019/01/23 14:00 | Gonzalo Villanueva v Nino Serdarusic | 6-7,6-4,4-6 |
| Challenger Punta del Este | 2019/01/21 14:00 | Thiago Seyboth Wild v Gonzalo Villanueva | 6-1,4-6,3-6 |
| Challenger Buenos Aires | 2018/11/13 19:50 | Gonzalo Villanueva v Hugo Dellien | 4-6,3-6 |
| ITF M15 Pinamar | 2019/03/19 12:30 | Federico Moreno v Gaston Tonello | 1-6,2-6 |
| ITF M15 Pinamar | 2019/03/18 15:00 | Gaston Tonello v Felipe Derdoy | 6-1,6-1 |
| ITF Argentina F5 | 2018/09/09 14:30 | Emilio Juan Benitez v Gaston Tonello | 6-0,6-3 |
| ITF Argentina F2 | 2018/05/20 13:00 | Arklon H D Pino v Gaston Tonello | 6-4,3-6,6-3 |
| ITF Argentina F1 | 2018/05/15 17:25 | Arklon H D Pino v Gaston Tonello | 6-1,6-3 |
| ITF Argentina F1 | 2018/05/14 12:00 | Gaston Tonello v Leonardo Sprovieri | 2-6,6-2,6-3 |
| ITF Argentina F1 | 2018/05/13 12:00 | Francisco Aranguren v Gaston Tonello | 4-6,0-6 |
| ITF Argentina F1 | 2018/05/12 11:30 | Gaston Tonello v Gian M Di Natale | 6-2,6-3 |