Round: 25 Ground: Clay
| Challenger Vicenza | 2016/05/24 15:20 | Gastao Elias v Guilherme Clezar | 6-4,6-4 |
| French Open Qual | 2016/05/16 12:35 | Guilherme Clezar v Frances Tiafoe | 6-1,5-7,2-6 |
| Challenger Sarasota | 2016/04/15 21:00 | Noah Rubin v Guilherme Clezar | 3-6,0-6 |
| Challenger Sarasota | 2016/04/13 15:00 | Guilherme Clezar v Nicolas Kicker | 7-6,6-1 |
| Challenger Sarasota | 2016/04/11 19:35 | Guilherme Clezar v Ryan Harrison | 7-5,6-2 |
| ATP Houston Qual | 2016/04/02 16:30 | Brian Baker v Guilherme Clezar | 6-2,7-6 |
| Challenger Santiago 2 Qual | 2016/03/11 16:00 | Guilherme Clezar v Rogerio Dutra Silva | 3-6,5-7 |
| Challenger Santiago 2 Qual | 2016/03/09 18:15 | Guilherme Clezar v Mathias Bourgue | 6-4,7-6 |
| ITF Bosnia and Herzegovina F3 | 2016/05/29 12:00 | Gianluigi Quinzi v Dejan Katic | 6-2,6-4 |
| ITF Bosnia and Herzegovina F3 | 2016/05/28 10:00 | Christian Lindell v Gianluigi Quinzi | 2-6,6-4,4-6 |
| ITF Bosnia and Herzegovina F3 | 2016/05/25 10:50 | Gianluigi Quinzi v Nino Serdarusic | 6-3,6-2 |
| ITF Hungary F1 | 2016/04/24 11:00 | Grzegorz Panfil v Gianluigi Quinzi | 3-6,5-7 |
| ITF Hungary F1 | 2016/04/23 08:00 | Gianluigi Quinzi v Kamil Majchrzak | 6-4,6-3 |
| ITF Hungary F1 | 2016/04/22 08:00 | Gianluigi Quinzi v Riccardo Bellotti | 6-3,6-4 |
| ITF Hungary F1 | 2016/04/21 09:35 | Gianluigi Quinzi v Ivan Bjelica | 6-1,6-0 |
| ITF Hungary F1 | 2016/04/20 10:05 | Gianluigi Quinzi v Tomislav Ternar | 6-2,7-6 |