Round: 27 Ground: Clay
| Challenger Medellin | 2015/10/07 20:00 | Paolo Lorenzi v Juan Ignacio Galarza | 3-6,6-4,6-4 |
| Challenger Medellin | 2015/10/06 18:30 | Paolo Lorenzi v Fernando Romboli | 6-3,6-2 |
| Davis Cup | 2015/09/20 07:30 | Konstantin Kravchuk v Paolo Lorenzi | 4-6,6-7 |
| Challenger Genova | 2015/09/10 13:00 | Paolo Lorenzi v Filippo Volandri | 2-6,5-7 |
| Challenger Genova | 2015/09/09 10:30 | Paolo Lorenzi v Mate Delic | 6-2,6-4 |
| US Open | 2015/09/01 15:00 | Jiri Vesely v Paolo Lorenzi | 6-4,6-4,6-4 |
| Challenger Cortina | 2015/08/09 12:30 | Paolo Lorenzi v Maximo Gonzalez | 6-3,7-5 |
| Challenger Cortina | 2015/08/08 10:15 | Paolo Lorenzi v Daniel Munoz-De La Nava | 6-2,6-4 |
| Challenger Medellin | 2015/10/05 16:00 | Yannik Reuter v Guilherme Clezar | 2-6,7-5,1-6 |
| Challenger Campinas | 2015/09/23 22:25 | Facundo Arguello v Guilherme Clezar | 6-3,6-7,6-4 |
| Challenger Campinas | 2015/09/21 21:35 | Christian Lindell v Guilherme Clezar | 7-5,3-6,4-6 |
| US Open Qual | 2015/08/28 18:15 | Guilherme Clezar v John-Patrick Smith | 3-6,2-6 |
| US Open Qual | 2015/08/27 21:20 | Nicolas Almagro v Guilherme Clezar | 6-7,6-4,4-6 |
| US Open Qual | 2015/08/26 16:40 | Amir Weintraub v Guilherme Clezar | 6-3,4-6,3-6 |
| Challenger Aptos | 2015/08/13 20:50 | Guilherme Clezar v Malek Jaziri | 3-6,6-3,3-6 |
| ATP Washington Qual | 2015/08/01 16:40 | Guilherme Clezar v Ryan Harrison | 3-6,7-6,2-6 |