Stadium: Quadra 6 Round: 19 Ground: Clay
| 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 Piracicaba | 2024/01/29 13:00 | Gonzalo Villanueva v Fernando Yamacita | 6-2,6-0 |
| Challenger - Buenos Aires | 2024/01/17 13:00 | Gonzalo Villanueva v Damien Wenger | 6-7,4-6 |
| Challenger - Buenos Aires - kval | 2024/01/15 13:00 | Gonzalo Villanueva v Gerard Campana Lee | 6-4,7-6 |
| Challenger - Buenos Aires - kval | 2024/01/14 15:55 | Gilbert S K Junior v Gonzalo Villanueva | 5-7,4-6 |
| Challenger - Buenos Aires | 2024/01/09 20:05 | Oleksii Krutykh v Gonzalo Villanueva | 4-6,7-5,7-6 |
| Challenger - Buenos Aires | 2024/01/08 15:15 | Adolfo Daniel Vallejo v Gonzalo Villanueva | 2-6,4-6 |
| Challenger - Buenos Aires | 2024/01/07 13:00 | Vito Antonio Darderi v Gonzalo Villanueva | 1-6,0-6 |
| ITF M15 Concepción | 2023/12/16 13:00 | Gonzalo Villanueva v Facundo Mena | 6-3,6-4 |
| Challenger Piracicaba | 2024/01/29 13:00 | Enrique Bogo v Mariano Kestelboim | 2-6,0-6 |
| UTR Pro Tigre | 2023/12/10 19:49 | Leonardo Aboian v Mariano Kestelboim | 2-6,2-6 |
| UTR Pro Tigre | 2023/12/09 16:33 | Franco Emanuel Egea v Mariano Kestelboim | 2-6,2-6 |
| UTR Pro Tigre | 2023/12/08 12:00 | Mariano Kestelboim v Lucio Ratti | 6-4,5-0 |
| UTR Pro Tigre | 2023/12/07 11:30 | Mariano Kestelboim v Francisco Bastias | 6-1,6-0 |
| UTR Pro Tigre | 2023/12/06 16:38 | Lautaro Agustin Corthey v Mariano Kestelboim | 1-6,1-6 |
| UTR Pro Tigre | 2023/12/05 13:30 | Andres Gabriel Ciurletti v Mariano Kestelboim | 0-6,2-6 |
| Challenger Temuco | 2023/11/28 18:00 | Mariano Kestelboim v Valentin Vacherot | 5-7,2-6 |