Round: 25 Ground: Clay
| ATP Washington Qual | 2015/08/01 16:40 | Clezar, Guilherme v Harrison, Ryan | 3-6,7-6,2-6 |
| ATP Houston Qual | 2016/04/02 16:30 | Baker, Brian v Clezar, Guilherme | 6-2,7-6 |
| Challenger Santiago 2 Qual | 2016/03/11 16:00 | Clezar, Guilherme v Dutra Silva, Rogerio | 3-6,5-7 |
| Challenger Santiago 2 Qual | 2016/03/09 18:15 | Clezar, Guilherme v Mathias Bourgue | 6-4,7-6 |
| Challenger Guayaquil | 2015/11/03 17:35 | Clezar, Guilherme v Pella, Guido | 1-6,6-3,3-6 |
| Challenger Medellin | 2015/10/08 15:30 | Lorenzi, Paolo v Clezar, Guilherme | 7-6,6-4 |
| Challenger Medellin | 2015/10/05 16:00 | Reuter, Yannik v Clezar, Guilherme | 2-6,7-5,1-6 |
| Challenger Campinas | 2015/09/23 22:25 | Arguello, Facundo v Clezar, Guilherme | 6-3,6-7,6-4 |
| Challenger Campinas | 2015/09/21 21:35 | Lindell, Christian v Clezar, Guilherme | 7-5,3-6,4-6 |
| Miami, USA, Qualifying | 2016/03/21 18:50 | Zeballos, Horacio v Harrison, Ryan | 6-7,6-3,6-4 |
| ATP Memphis | 2016/02/11 01:30 | Kei Nishikori v Harrison, Ryan | 6-2,7-5 |
| ATP Memphis | 2016/02/09 01:30 | Harrison, Ryan v Frances Tiafoe | 6-7,7-6,6-4 |
| Challenger Dallas | 2016/02/03 18:30 | Harrison, Ryan v Smyczek, Tim | 0-6,7-5,4-6 |
| Challenger Knoxville | 2015/11/10 19:10 | Harrison, Ryan v Kavcic, Blaz | 2-6,4-6 |
| Challenger Charlottesville | 2015/11/05 00:05 | Henri Laaksonen v Harrison, Ryan | 7-5,7-5 |
| Challenger Charlottesville | 2015/11/02 23:30 | Tennys Sandgren v Harrison, Ryan | 5-7,3-6 |
| Challenger Las Vegas | 2015/10/20 21:00 | Michael Mmoh v Harrison, Ryan | 6-2,6-3 |