Stadium: Cancha 2 Round: 26 Ground: Clay
| Challenger Piracicaba | 2024/01/30 13:00 | Gonzalo Villanueva v Mariano Kestelboim | 6-2,7-5 |
| ITF M25 Punta del Este | 2020/02/19 16:25 | Mariano Kestelboim v Gonzalo Villanueva | 1-6,7-6,2-6 |
| ITF Peru F3 | 2018/10/12 16:00 | Gonzalo Villanueva v Mariano Kestelboim | 5-7,7-6,3-6 |
| ITF Argentina F9 | 2017/11/15 16:40 | Mariano Kestelboim v Gonzalo Villanueva | 6-3,2-6,7-6 |
| ITF Argentina F5 | 2016/05/03 18:00 | Gonzalo Villanueva v Mariano Kestelboim | 4-6,4-6 |
| ITF Argentina F3 | 2015/03/24 14:50 | Mariano Kestelboim v Gonzalo Villanueva | 6-4,0-6,3-6 |
| Challenger San Miguel de Tucumán | 2024/04/16 14:50 | Mariano Kestelboim v Ignacio Carou | 6-3,6-1 |
| Challenger Asunción | 2024/03/18 19:00 | Lorenzo Joaquin Rodriguez v Mariano Kestelboim | 7-5,6-7,6-2 |
| Challenger Asunción | 2024/03/17 19:00 | Enzo Lima v Mariano Kestelboim | 2-6,0-6 |
| Challenger - Santiago | 2024/03/12 16:40 | Gabi Adrian Boitan v Mariano Kestelboim | 6-4,6-4 |
| Challenger - Santiago | 2024/03/11 13:00 | Mariano Kestelboim v Guido Ivan Justo | 6-2,4-6,6-1 |
| Challenger Santa Cruz | 2024/03/05 20:15 | Roman Andres Burruchaga v Mariano Kestelboim | 6-2,6-4 |
| Challenger Santa Cruz | 2024/03/03 15:00 | Joao Sonaglia v Mariano Kestelboim | 0-6,0-6 |
| ITF M15 Villa Maria | 2024/02/26 13:20 | Mariano Kestelboim v Facundo Mena | 6-3,6-0 |
| Challenger San Miguel de Tucumán | 2024/04/16 17:15 | Alejo Lorenzo Lingua Lavallen v Gonzalo Villanueva | 6-7,3-6 |
| Challenger Florianopolis | 2024/04/02 22:45 | Daniel Dutra Da Silva v Gonzalo Villanueva | 4-6,7-6,6-2 |
| Challenger - Sao Leopoldo | 2024/03/26 18:40 | Juan Pablo Varillas v Gonzalo Villanueva | 7-5,7-6 |
| Challenger - Sao Leopoldo | 2024/03/25 17:15 | Gonzalo Villanueva v Kaichi Uchida | 6-3,1-6,2-6 |
| Challenger - Sao Leopoldo | 2024/03/24 21:00 | Gonzalo Villanueva v Rafael Tosetto | 6-2,6-0 |
| Challenger Asunción | 2024/03/20 01:00 | Gonzalo Villanueva v Nicolas Zanellato | 3-6,4-6 |
| Challenger Asunción | 2024/03/18 19:00 | Gonzalo Villanueva v Conner Huertas Del Pino | 6-3,6-1 |
| Challenger Asunción | 2024/03/17 20:55 | Gonzalo Villanueva v Ignacio Carou | 6-1,6-1 |