Stadium: Court M Round: 62 Ground: Clay
| Challenger Braunschweig Qual | 2018/07/07 12:05 | Souza, Joao Olavo v Netuschil, Marvin | 2-6,6-2,3-6 |
| 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 |
| ITF Germany F8 Qual | 2018/07/15 08:00 | Langmajer, Dominik v Erdbories, Tillmann | 4-6,1-6 |
| Challenger Braunschweig Qual | 2018/07/07 11:30 | Erdbories, Tillmann v Samper-Montana, Jordi | 2-6,0-6 |
| Challenger Braunschweig Qual | 2018/07/07 07:30 | Goldsteiner, Peter v Erdbories, Tillmann | 1-6,4-6 |
| ITF Netherlands F2 | 2018/07/04 08:00 | Erdbories, Tillmann v Gerritsen, Stephan | 7-5,5-7,4-6 |
| ITF Netherlands F2 Qual | 2018/07/02 11:45 | Guenther, Valentin v Erdbories, Tillmann | 6-7,6-1,2-6 |
| ITF Netherlands F2 Qual | 2018/07/01 08:00 | Broekhof, Nick v Erdbories, Tillmann | 6-4,3-6,1-6 |
| ITF Germany F4 | 2018/06/19 09:00 | Bangoura, Sekou v Erdbories, Tillmann | 7-6,6-4 |
| ITF Tunisia F21 | 2018/05/26 10:00 | Sonkin, Jeremy v Erdbories, Tillmann | 7-5,2-6,6-3 |