Stadium: Campo Centrale Round: 25 Ground: Clay
| Pullach, Germany | 2018/08/07 16:35 | Moraing, Mats v Clezar, Guilherme | 6-2,3-6,6-3 |
| Challenger Liberec | 2018/07/30 10:30 | Goncalo Oliveira v Clezar, Guilherme | 7-6,6-2 |
| Challenger Prague | 2018/07/27 11:00 | Nedovyesov, Aleksandr v Clezar, Guilherme | 6-4,7-6 |
| Challenger Prague | 2018/07/26 12:35 | Clezar, Guilherme v van Rijthoven, Tim | 6-3,6-7,6-4 |
| Challenger Prague | 2018/07/25 10:40 | Clezar, Guilherme v Brands, Daniel | 6-3,6-1 |
| Wimbledon Qual | 2018/06/25 11:15 | Fabbiano, Thomas v Clezar, Guilherme | 6-2,6-3 |
| L'Aquila, Italie | 2018/06/23 13:00 | Facundo Bagnis v Clezar, Guilherme | 6-3,5-7,7-6 |
| L'Aquila, Italie | 2018/06/22 13:00 | Clezar, Guilherme v Quinzi, Gianluigi | 6-3,1-6,7-6 |
| ITF Italy F22 | 2018/08/06 16:25 | Hernan Casanova v Balzerani, Riccardo | 6-3,0-6,6-2 |
| ITF Italy F21 | 2018/08/02 13:00 | Simon, Tobias v Balzerani, Riccardo | 6-2,7-6 |
| ITF Italy F21 | 2018/08/01 11:50 | Balzerani, Riccardo v Daniel Dutra Da Silva | 6-7,6-2,7-5 |
| ITF Italy F21 | 2018/07/31 13:15 | Balzerani, Riccardo v Roggero, Tommaso | 6-3,4-6,6-2 |
| ITF Italy F20 | 2018/07/28 18:45 | Balzerani, Riccardo v Jose Pereira | 4-6,6-4,6-3 |
| ITF Italy F20 | 2018/07/27 20:05 | Daniel Dutra Da Silva v Balzerani, Riccardo | 1-6,6-7 |
| ITF Italy F20 | 2018/07/25 09:30 | Balzerani, Riccardo v Musialek, Alexis | 6-3,6-1 |
| ITF Italy F20 | 2018/07/23 12:00 | Tomas Martin Etcheverry v Balzerani, Riccardo | 4-6,6-1,1-6 |