Round: 25 Ground: Clay
| Challenger Sarasota Qual | 2015/04/13 17:55 | Guilherme Clezar v Mischa Zverev | 1-6,2-6 |
| ATP - Houston | 2015/04/07 20:45 | Janko Tipsarevic v Guilherme Clezar | 6-4,3-6,7-6 |
| ATP Houston Qual | 2015/04/05 16:00 | Facundo Bagnis v Guilherme Clezar | 2-6,6-7 |
| ATP Houston Qual | 2015/04/04 15:00 | Guilherme Clezar v Sekou Bangoura | 7-6,7-6 |
| Challenger - San Luis Potosi | 2015/04/02 20:10 | Guilherme Clezar v James McGee | 3-6,6-2,6-7 |
| Challenger - San Luis Potosi | 2015/04/01 21:10 | Connor Smith v Guilherme Clezar | 2-6,5-7 |
| 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 - Tallahassee | 2015/04/27 14:00 | Frank Dancevic v Tennys Sandgren | 6-4,2-6,1-6 |
| Challenger - Savannah | 2015/04/22 15:00 | Frances Tiafoe v Frank Dancevic | 2-6,6-4,6-2 |
| Challenger - Sarasota | 2015/04/14 21:15 | Austin Krajicek v Frank Dancevic | 6-4,6-4 |
| Challenger Drummondville | 2015/03/22 17:00 | John-Patrick Smith v Frank Dancevic | 6-7,7-6,7-5 |
| Challenger Drummondville | 2015/03/20 22:30 | Frank Dancevic v Matteo Donati | 6-4,6-4 |
| Challenger Drummondville | 2015/03/17 18:30 | Frank Dancevic v Tennys Sandgren | 6-3,6-3 |
| Challenger Wroclaw | 2015/02/17 10:00 | Jurgen Zopp v Frank Dancevic | 6-4,6-3 |
| Challenger - Bergamo | 2015/02/11 11:50 | Aleksandr Nedovyesov v Frank Dancevic | 7-6,6-3 |