Stadium: Court 10 Round: 26 Ground: Clay
| Pinamar, Singles Qualifying M-ITF-ARG-03A | 2019/03/30 14:00 | Galarza, Juan Ignacio v Gonzalo Villanueva | 6-2,6-1 |
| ITF Argentina F4 | 2018/09/06 18:10 | Galarza, Juan Ignacio v Gonzalo Villanueva | 6-3,7-5 |
| Challenger Punta Del Este Qual | 2018/02/26 14:30 | Galarza, Juan Ignacio v Gonzalo Villanueva | 6-3,6-2 |
| ITF Argentina F10 | 2017/11/24 13:00 | Galarza, Juan Ignacio v Gonzalo Villanueva | 7-6,2-6,6-4 |
| Challenger Medellin | 2017/07/12 16:00 | Gonzalo Villanueva v Galarza, Juan Ignacio | 1-6,6-4,6-7 |
| ITF Argentina F2 | 2017/06/16 16:10 | Galarza, Juan Ignacio v Gonzalo Villanueva | 3-6,6-2,7-6 |
| ITF Argentina F4 | 2015/05/05 16:15 | Galarza, Juan Ignacio v Gonzalo Villanueva | 1-6,7-5,6-2 |
| ITF Argentina F1 | 2015/03/11 17:05 | Galarza, Juan Ignacio v Gonzalo Villanueva | 6-3,6-2 |
| ITF M25 Rosario | 2022/04/05 17:25 | Galarza, Juan Ignacio v Ivan Dreycopp | 6-1,6-0 |
| ITF M25 Rosario | 2022/03/29 15:55 | Galarza, Juan Ignacio v Murkel Dellien | 3-6,0-6 |
| ITF - M15 Vero Beach | 2021/10/21 18:00 | Benitez Chavarriaga, Juan Manuel v Galarza, Juan Ignacio | 7-5,6-4 |
| ITF - M15 Vero Beach | 2021/10/20 23:30 | Andres Andrade v Galarza, Juan Ignacio | 1-6,7-5,4-6 |
| ITF M15 Naples | 2021/10/14 13:30 | Duarte Vale v Galarza, Juan Ignacio | 6-2,7-5 |
| ITF M15 Naples | 2021/10/12 15:00 | Bruno Kuzuhara v Galarza, Juan Ignacio | 3-6,4-6 |
| ITF M15 Naples | 2021/10/08 14:30 | Antoine Cornut-Chauvinc v Galarza, Juan Ignacio | 6-4,6-4 |
| ITF M15 Naples | 2021/10/07 13:30 | Sysoev, Nikolay v Galarza, Juan Ignacio | 1-6,1-6 |
| ITF M25 Rosario | 2022/04/06 14:00 | Nicolas Zanellato v Gonzalo Villanueva | 4-6,4-6 |
| ITF M25 Rosario | 2022/04/03 14:00 | Santiago Rodriguez Taverna v Gonzalo Villanueva | 4-6,6-3,6-3 |
| ITF M25 Rosario | 2022/04/02 15:45 | Gonzalo Villanueva v Oliver Crawford | 7-6,6-0 |
| ITF M25 Rosario | 2022/04/01 15:45 | Alejo Lorenzo Lingua Lavallen v Gonzalo Villanueva | 6-4,3-6,5-7 |
| ITF M25 Rosario | 2022/03/31 13:00 | Juan Bautista Otegui v Gonzalo Villanueva | 5-7,2-6 |
| ITF M25 Rosario | 2022/03/30 15:00 | Llanes, Francisco v Gonzalo Villanueva | 2-6,4-6 |
| Challenger - Santa Cruz | 2022/03/22 19:00 | Gonzalo Villanueva v Santiago Rodriguez Taverna | 5-7,6-7 |
| Challenger - Santa Cruz | 2022/03/21 21:05 | Gonzalo Villanueva v Barrientos, Nicolas | 3-6,6-3,2-6 |