Stadium: Court 10 Round: 26 Ground: Clay
| ITF Argentina F6 | 2018/09/19 14:45 | Gonzalo Villanueva v Guido Ivan Justo | 6-1,6-4 |
| ITF Peru F2 | 2018/10/02 19:10 | Jorge Panta v Guido Ivan Justo | 7-5,2-6,3-6 |
| ITF Peru F1 | 2018/09/26 17:25 | Guido Ivan Justo v Diego Hidalgo | 3-6,3-6 |
| ITF Peru F1 | 2018/09/24 15:00 | Luis Britto v Guido Ivan Justo | 1-6,1-6 |
| ITF Argentina F6 | 2018/09/19 14:45 | Gonzalo Villanueva v Guido Ivan Justo | 6-1,6-4 |
| ITF Argentina F6 | 2018/09/18 15:10 | Guido Ivan Justo v Santiago Rodriguez Taverna | 6-1,6-3 |
| ITF Argentina F6 | 2018/09/17 13:00 | Guido Ivan Justo v Emilio Juan Benitez | 6-4,6-1 |
| ITF Argentina F5 | 2018/09/12 16:05 | Guido Ivan Justo v Nicolas Alvarez | 3-6,1-6 |
| ITF Argentina F4 | 2018/09/05 14:30 | Guido Ivan Justo v Santiago Rodriguez Taverna | 1-6,6-0,3-6 |
| ITF Peru F2 | 2018/10/02 18:10 | Victor Nunez v Gonzalo Villanueva | 2-6,4-6 |
| ITF Peru F1 | 2018/09/29 16:30 | Arklon H D Pino v Gonzalo Villanueva | 0-6,3-6 |
| ITF Peru F1 | 2018/09/28 16:00 | Gonzalo Villanueva v Conner Huertas Del Pino | 6-3,3-6,6-3 |
| ITF Peru F1 | 2018/09/27 15:00 | Nicolas Santos v Gonzalo Villanueva | 1-6,2-6 |
| ITF Peru F1 | 2018/09/26 15:00 | Nicolas Zaidman v Gonzalo Villanueva | 0-6,0-6 |
| ITF Peru F1 | 2018/09/25 17:55 | Nick Hardt v Gonzalo Villanueva | 1-6,7-5,4-6 |
| ITF Argentina F6 | 2018/09/22 12:00 | Francisco Cerundolo v Gonzalo Villanueva | 0-6,3-6 |
| ITF Argentina F6 | 2018/09/21 13:00 | Gonzalo Villanueva v Maximiliano Estevez | 7-6,6-2 |