Stadium: Court 3 Round: 27 Ground: Clay
| Challenger Punta Del Este Qual | 2018/02/26 14:30 | Juan Ignacio Galarza v Gonzalo Villanueva | 6-3,6-2 |
| ITF Argentina F10 | 2017/11/24 13:00 | Juan Ignacio Galarza v Gonzalo Villanueva | 7-6,2-6,6-4 |
| Challenger Medellin | 2017/07/12 16:00 | Gonzalo Villanueva v Juan Ignacio Galarza | 1-6,6-4,6-7 |
| ITF Argentina F2 | 2017/06/16 16:10 | Juan Ignacio Galarza v Gonzalo Villanueva | 3-6,6-2,7-6 |
| ITF Argentina F4 | 2015/05/05 16:15 | Juan Ignacio Galarza v Gonzalo Villanueva | 1-6,7-5,6-2 |
| ITF Argentina F1 | 2015/03/11 17:05 | Juan Ignacio Galarza v Gonzalo Villanueva | 6-3,6-2 |
| ITF Argentina F4 | 2018/09/05 14:30 | Juan Ignacio Galarza v Arklon H D Pino | 7-5,6-4 |
| ITF Argentina F4 | 2018/09/04 14:30 | Juan Ignacio Galarza v Agustin Riquelme Coppari | 6-0,6-2 |
| ITF Germany F7 | 2018/07/13 11:00 | Matthias Haim v Juan Ignacio Galarza | 6-2,5-7,6-3 |
| ITF Germany F7 | 2018/07/12 14:00 | Hendrik Jebens v Juan Ignacio Galarza | 3-6,3-6 |
| ITF Germany F7 | 2018/07/11 12:55 | Tristan Meraut v Juan Ignacio Galarza | 2-6,1-6 |
| ITF Tunisia F25 | 2018/07/01 09:00 | Juan Ignacio Galarza v Johan Nikles | 6-3,7-6 |
| ITF Tunisia F25 | 2018/06/30 09:00 | Juan Ignacio Galarza v Juan P G Mazzuchi | 6-2,6-4 |
| ITF Tunisia F25 | 2018/06/29 08:30 | Juan Ignacio Galarza v Alexandar Lazarov | 7-5,6-4 |
| ITF Argentina F4 | 2018/09/05 16:50 | Maximiliano Estevez v Gonzalo Villanueva | 6-0,5-7,1-6 |
| Challenger Cordenons | 2018/08/12 16:15 | Daniel Dutra Da Silva v Gonzalo Villanueva | 7-5,6-4 |
| Challenger Cordenons | 2018/08/11 12:30 | Gonzalo Villanueva v Franco Agamenone | 7-6,6-2 |
| ITF Italy F22 | 2018/08/09 12:25 | Gonzalo Villanueva v Fabien Reboul | 4-6,2-6 |
| ITF Italy F22 | 2018/08/08 11:40 | Hernan Casanova v Gonzalo Villanueva | 3-6,4-6 |
| ITF Italy F22 | 2018/08/06 12:00 | Jose Pereira v Gonzalo Villanueva | 6-4,3-6,4-6 |
| ITF Italy F21 | 2018/08/03 11:00 | Gonzalo Villanueva v Tomas Martin Etcheverry | 4-6,6-3,5-7 |
| ITF Italy F21 | 2018/08/02 14:40 | Lorenzo Frigerio v Gonzalo Villanueva | 3-6,2-6 |