Stadium: Center Court Round: 46
| Challenger Milan Qual | 2018/06/24 13:10 | Samper-Montana, Jordi v Souza, Joao Olavo | 6-0,6-3 |
| Challenger Milan Qual | 2018/06/23 13:35 | Pasquale De Giorgio v Souza, Joao Olavo | 4-6,2-6 |
| Challenger L'Aquila Qual | 2018/06/17 08:00 | Souza, Joao Olavo v Riccardo Bonadio | 7-5,6-7,3-6 |
| Challenger Caltanissetta Qual | 2018/06/11 10:15 | Souza, Joao Olavo v Sieber, Marc | 6-2,3-6,4-6 |
| Challenger Caltanissetta Qual | 2018/06/10 12:10 | Souza, Joao Olavo v Fortuna, Claudio | 7-6,6-2 |
| Challenger Caltanissetta Qual | 2018/06/09 12:05 | Souza, Joao Olavo v Fausto Tabacco | 6-2,6-2 |
| Challenger Guadalajara | 2018/04/17 20:15 | Souza, Joao Olavo v Escobar, Gonzalo | 6-2,3-6,5-7 |
| Challenger Guadalajara Qual | 2018/04/16 17:00 | Gonzalez, Alejandro v Souza, Joao Olavo | 4-6,6-0,3-6 |
| Challenger Braunschweig Qual | 2018/07/07 07:30 | von Hindte, Leonard v Netuschil, Marvin | 6-7,2-6 |
| Challenger Marburg Qual | 2018/07/01 09:00 | Tristan Lamasine v Netuschil, Marvin | 6-2,3-6,6-0 |
| Challenger Marburg Qual | 2018/06/30 08:00 | Netuschil, Marvin v Kimmer Coppejans | 6-4,3-6,6-1 |
| ITF Germany F5 | 2018/06/28 16:35 | Netuschil, Marvin v Dimitar Kuzmanov | 3-6,1-6 |
| ITF Germany F5 | 2018/06/27 16:00 | Denis Klok v Netuschil, Marvin | 3-6,3-6 |
| ITF Belgium F1 | 2018/06/24 13:00 | Netuschil, Marvin v Pla Malfeito, Jaume | 6-2,6-3 |
| ITF Belgium F1 | 2018/06/23 14:00 | Netuschil, Marvin v Geens, Clement | 7-6,6-1 |
| ITF Belgium F1 | 2018/06/22 09:00 | Netuschil, Marvin v Kenneth Raisma | 6-4,6-2 |