Round: 44 Ground: Clay
| ATP Buenos Aires Qual | 2015/02/21 18:00 | Juan Ignacio Iliev v Guilherme Clezar | 1-6,0-6 |
| Challenger Guayaquil | 2014/11/12 01:40 | Renzo Olivo v Guilherme Clezar | 3-6,6-3,6-3 |
| Challenger Cali 2 | 2014/10/01 17:00 | Alejandro Gonzalez v Guilherme Clezar | 4-6,6-3,6-1 |
| Challenger Cali 2 | 2014/09/30 19:25 | Agustin Velotti v Guilherme Clezar | 2-6,2-6 |
| Challenger Campinas | 2014/09/19 15:00 | Diego Schwartzman v Guilherme Clezar | 6-3,7-6 |
| Challenger Campinas | 2014/09/17 20:45 | Nicolas Santos v Guilherme Clezar | 1-6,0-6 |
| Challenger Campinas | 2014/09/15 22:30 | Gonzalo Lama v Guilherme Clezar | 4-6,1-6 |
| Challenger Medellin | 2014/09/04 16:00 | Guilherme Clezar v Tomas Lipovsek Puches | 6-2,7-5 |
| ITF USA F1 | 2015/01/08 17:45 | Mischa Zverev v Nicolas Barrientos | 2-6,2-6 |
| ITF USA F1 | 2015/01/07 17:50 | Mischa Zverev v Arthur Surreaux | 6-1,3-6,6-2 |