Stadium: Cancha 1 Round: 19 Ground: Clay
| Challenger - Santiago | 2021/03/14 14:00 | Gomez-Herrera, Carlos v Nunez, V. | 6-4,6-2 |
| ATP - Santiago | 2021/03/06 18:45 | Gomez-Herrera, Carlos v Renzo Olivo | 6-2,4-6,4-6 |
| ATP - Buenos Aires | 2021/02/27 13:00 | Gomez-Herrera, Carlos v Sumit Nagal | 6-7,6-2,6-7 |
| ATP - Cordoba | 2021/02/21 18:15 | Joao Menezes v Gomez-Herrera, Carlos | 6-1,6-1 |
| ATP - Cordoba | 2021/02/20 22:55 | Gomez-Herrera, Carlos v Guido Andreozzi | 6-3,7-5 |
| Challenger - Concepcion | 2021/02/16 14:30 | Joao Domingues v Gomez-Herrera, Carlos | 4-6,6-4,7-5 |
| Challenger - Concepcion | 2021/02/15 15:40 | Gomez-Herrera, Carlos v Oscar Jose Gutierrez | 6-4,6-4 |
| Challenger - Concepcion | 2021/02/14 19:20 | Gomez-Herrera, Carlos v Fermin Tenti | 6-4,5-7,6-3 |
| Challenger - Santiago | 2021/03/14 14:00 | Daniel Antonio Nunez v Gonzalo Villanueva | 6-3,3-6,6-7 |
| ITF - M25 Naples | 2021/02/27 16:00 | Gonzalo Villanueva v Corentin Denolly | 6-7,2-6 |
| ITF - M25 Naples | 2021/02/26 16:00 | Martin Damm v Gonzalo Villanueva | 7-5,6-7,6-7 |
| ITF - M25 Naples | 2021/02/25 14:50 | Redlicki, Michael v Gonzalo Villanueva | 5-7,6-3,0-6 |
| ITF - M25 Naples | 2021/02/24 16:50 | Gonzalo Villanueva v Darian King | 6-3,6-0 |
| ITF - M25 Naples | 2021/02/17 20:50 | Gonzalo Villanueva v Stefan Kozlov | 3-6,2-6 |
| Hurlingham, Singles Qualifying M-ITF-ARG-02A | 2020/03/05 13:00 | Gonzalo Villanueva v Arreche, Nicolas Alberto | 4-6,5-7 |
| Hurlingham, Singles Qualifying M-ITF-ARG-02A | 2020/03/04 13:00 | Gonzalo Villanueva v Jose Pereira | 6-4,6-1 |