Stadium: Court 11 Round: 26 Ground: Clay
| ITF Peru F2 | 2018/10/04 17:00 | Guido Ivan Justo v Gonzalo Villanueva | 4-6,1-6 |
| ITF Argentina F6 | 2018/09/19 14:45 | Gonzalo Villanueva v Guido Ivan Justo | 6-1,6-4 |
| ITF Peru F3 | 2018/10/09 16:40 | Gonzalo Villanueva v Ore, I. A. | 6-3,6-4 |
| ITF Peru F2 | 2018/10/07 20:30 | Malla, Bastian v Gonzalo Villanueva | 7-6,6-4 |
| ITF Peru F2 | 2018/10/05 16:50 | Huertas Del Pino Cordova, Arklon v Gonzalo Villanueva | 1-6,2-6 |
| ITF Peru F2 | 2018/10/04 17:00 | Guido Ivan Justo v Gonzalo Villanueva | 4-6,1-6 |
| ITF Peru F2 | 2018/10/02 18:10 | Nunez, V. v Gonzalo Villanueva | 2-6,4-6 |
| ITF Peru F1 | 2018/09/29 16:30 | Huertas Del Pino Cordova, Arklon 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 | Santos, Nicolas v Gonzalo Villanueva | 1-6,2-6 |
| ITF Peru F3 | 2018/10/09 18:00 | Lautaro Agustin Falabella v Guido Ivan Justo | 3-6,4-6 |
| ITF Peru F2 | 2018/10/04 17:00 | Guido Ivan Justo v Gonzalo Villanueva | 4-6,1-6 |
| ITF Peru F2 | 2018/10/02 19:10 | Panta Herreros, Jorge Brian v Guido Ivan Justo | 7-5,2-6,3-6 |
| ITF Peru F1 | 2018/09/26 17:25 | Guido Ivan Justo v Hidalgo, Diego | 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 Benitez, Emilio Juan | 6-4,6-1 |