Stadium: Cancha 4 Round: 25 Ground: Clay
| Challenger Campinas | 2017/10/05 16:40 | Gastao Elias v Clezar, Guilherme | 6-4,7-6 |
| Challenger Campinas | 2017/10/03 19:00 | Clezar, Guilherme v Lindell, Christian | 6-3,6-2 |
| Coupe Davis | 2017/09/15 02:00 | Sugita, Yuichi v Clezar, Guilherme | 6-2,7-5,7-6 |
| Challenger Quito | 2017/09/01 16:30 | Nicolas Jarry v Clezar, Guilherme | 4-6,7-6,6-4 |
| Challenger Quito | 2017/08/30 17:15 | Quiroz, Roberto v Clezar, Guilherme | 3-6,7-6,2-6 |
| Santo Domingo, Dominican Republic | 2017/08/16 02:20 | Damir Dzumhur v Clezar, Guilherme | 7-6,6-3 |
| Floridablanca, Colombia | 2017/08/10 20:55 | Clezar, Guilherme v Gonzalo Lama | 6-2,4-6,4-6 |
| Floridablanca, Colombia | 2017/08/09 16:00 | Clezar, Guilherme v Sorgi, Joao Pedro | 6-3,6-4 |
| Challenger Campinas | 2017/10/04 15:00 | Linzer, Michael v Andrej Martin | 2-6,7-5,6-4 |
| Challenger Campinas | 2017/10/02 18:30 | Linzer, Michael v Sorgi, Joao Pedro | 4-6,6-4,6-1 |
| Bogota, Colombia | 2017/09/06 15:00 | Escobar, Gonzalo v Linzer, Michael | 7-6,6-3 |
| Challenger Quito | 2017/08/30 15:00 | Gerald Melzer v Linzer, Michael | 7-6,6-3 |
| Challenger Quito | 2017/08/28 20:40 | Linzer, Michael v Velotti, Agustin | 7-6,4-6,6-3 |
| Santo Domingo, Dominican Republic | 2017/08/16 21:45 | Linzer, Michael v Nicolas Jarry | 5-7,1-6 |
| Santo Domingo, Dominican Republic | 2017/08/15 17:00 | Linzer, Michael v Daniel Elahi Galan | 6-3,4-6,7-5 |
| Floridablanca, Colombia | 2017/08/10 17:00 | Linzer, Michael v Arguello, Facundo | 3-6,4-6 |