Round: 27 Ground: Clay
| ITF Peru F1 | 2014/10/22 15:00 | Gonzalo Villanueva v Juan Carlos Saez | 6-7,4-6 |
| ITF Argentina F8 | 2016/05/24 22:00 | Gonzalo Villanueva v Fermin Peralta Martinez | 6-2,6-4 |
| ITF Argentina F8 | 2016/05/22 22:00 | Facundo Mena v Gonzalo Villanueva | 2-6,6-2,4-6 |
| ITF Argentina F7 | 2016/05/17 17:30 | Daniel Dutra Da Silva v Gonzalo Villanueva | 7-6,6-1 |
| ITF Argentina F6 | 2016/05/09 14:30 | Hernan Casanova v Gonzalo Villanueva | 7-6,6-1 |
| ITF Argentina F5 | 2016/05/03 18:00 | Gonzalo Villanueva v Mariano Kestelboim | 4-6,4-6 |
| ITF Argentina F3 | 2016/03/16 13:00 | Andrea Collarini v Gonzalo Villanueva | 6-4,6-4 |
| ITF Argentina F2 | 2016/03/08 17:40 | Gonzalo Villanueva v Francisco Bahamonde | 6-7,3-6 |
| ITF Chile F8 | 2015/11/30 17:00 | Jorge Montero v Gonzalo Villanueva | 7-6,6-3 |
| ITF Argentina F8 | 2016/05/24 22:00 | Eduardo Agustin Torre v Juan Carlos Saez | 7-6,2-6,6-7 |
| ITF Argentina F6 | 2016/05/13 13:00 | Federico Coria v Juan Carlos Saez | 1-6,6-3,6-0 |
| ITF Argentina F6 | 2016/05/12 17:00 | Victor Nunez v Juan Carlos Saez | 2-6,3-6 |
| ITF Argentina F6 | 2016/05/09 18:45 | Thiago Agustin Tirante v Juan Carlos Saez | 0-6,0-6 |
| ITF Argentina F5 | 2016/05/05 13:00 | Joao Pedro Sorgi v Juan Carlos Saez | 6-4,6-4 |
| ITF Argentina F5 | 2016/05/04 14:40 | Matias Zukas v Juan Carlos Saez | 1-6,3-6 |
| ITF Argentina F5 | 2016/05/03 17:35 | Federico Moreno v Juan Carlos Saez | 6-1,5-7,0-6 |
| Challenger Santiago 2 Qual | 2016/03/08 17:10 | Maximiliano Estevez v Juan Carlos Saez | 6-2,7-6 |