Stadium: Cancha 1 Round: 25 Ground: Clay
| US Open, New York, USA, Qualifying | 2016/08/23 19:20 | Arguello, Facundo v Clezar, Guilherme | 2-6,3-6 |
| Challenger Campinas | 2015/09/23 22:25 | Arguello, Facundo v Clezar, Guilherme | 6-3,6-7,6-4 |
| Challenger Lima | 2018/10/26 21:00 | Sousa, Pedro v Arguello, Facundo | 7-6,6-3 |
| Challenger Lima | 2018/10/25 17:00 | Hernandez-Fernandez, Jose v Arguello, Facundo | 1-6,2-6 |
| Challenger Lima | 2018/10/24 19:20 | Arguello, Facundo v Lorenzi, Paolo | 6-4,7-6 |
| Challenger Lima | 2018/10/23 17:20 | Juan Pablo Varillas v Arguello, Facundo | 4-6,1-6 |
| Santo Domingo, Dominican Republic | 2018/10/07 14:00 | Arguello, Facundo v Gomez, Alejandro | 3-6,6-1,3-6 |
| Challenger Campinas | 2018/10/02 13:00 | Gonzalez, Alejandro v Arguello, Facundo | 6-3,7-6 |
| Challenger Biella | 2018/09/21 09:00 | Arguello, Facundo v Delbonis, Federico | 2-6,4-6 |
| Challenger Biella | 2018/09/20 09:30 | Arguello, Facundo v Baldi, Filippo | 6-4,6-2 |
| Challenger Lima | 2018/10/24 16:00 | Clezar, Guilherme v Cristian Garin | 3-6,3-6 |
| Challenger Lima | 2018/10/22 17:55 | Clezar, Guilherme v Tagashira, Kento | 6-0,6-0 |
| Challenger Campinas | 2018/10/03 00:05 | Clezar, Guilherme v Cristian Garin | 7-6,6-7,4-6 |
| US Open, New York, USA | 2018/08/23 19:40 | Lorenzo Sonego v Clezar, Guilherme | 7-5,5-7,6-3 |
| US Open, New York, USA | 2018/08/22 22:40 | Ojeda Lara, Ricardo v Clezar, Guilherme | 4-6,3-6 |
| Cordenons, Italy | 2018/08/18 15:00 | Mate Valkusz v Clezar, Guilherme | 6-2,6-4 |
| Cordenons, Italy | 2018/08/17 12:30 | Clezar, Guilherme v Facundo Bagnis | 6-4,4-6,6-2 |
| Cordenons, Italy | 2018/08/15 13:10 | Clezar, Guilherme v Pedro Cachin | 6-2,6-4 |