Stadium: Quadra Joao Lima Round: 25 Ground: Clay
| Challenger Campinas | 2018/09/30 16:15 | Franco Agamenone v Souza, Joao Olavo | 4-6,2-6 |
| Challenger Campinas Qual | 2018/09/29 13:00 | Nusdeo, Joao Marcos v Souza, Joao Olavo | 2-6,0-6 |
| Challenger Tiburon | 2018/09/22 21:55 | Souza, Joao Olavo v Brooksby, Jenson | 5-7,1-6 |
| Challenger Szczecin | 2018/09/08 09:00 | Souza, Joao Olavo v Molteni, Andres | 6-3,5-7,6-7 |
| Genoa, Italy | 2018/09/03 12:00 | Souza, Joao Olavo v Andrea Pellegrino | 6-0,3-6,4-6 |
| Genoa, Italy | 2018/09/03 08:00 | Souza, Joao Olavo v Delic, Mate | 6-2,7-5 |
| Genoa, Italy | 2018/09/02 13:05 | Gianluca Mager v Souza, Joao Olavo | 4-6,4-6 |
| ITF Italy F22 | 2018/08/10 12:40 | Rondoni, Pietro v Souza, Joao Olavo | 6-3,6-7,6-1 |
| ITF Peru F1 | 2018/09/25 15:00 | Ornago, Fabrizio v Beretta, Duillo | 4-6,6-0,1-6 |
| Challenger Sibiu | 2018/09/19 09:05 | Pedro Martinez v Ornago, Fabrizio | 6-4,6-4 |
| Challenger Sibiu | 2018/09/18 10:40 | Ornago, Fabrizio v Ungur, Adrian | 3-6,6-3,7-6 |
| Challenger Sibiu | 2018/09/17 08:00 | Ornago, Fabrizio v Vlad Andrei Dancu | 7-5,7-5 |
| Challenger Sibiu | 2018/09/16 08:30 | Ornago, Fabrizio v Juan Pablo Paz | 7-5,6-4 |
| ITF Spain F26 | 2018/09/04 08:30 | Fornell-Mestres, Marc v Ornago, Fabrizio | 4-6,6-2,6-3 |
| ITF Tunisia F29 | 2018/09/02 09:30 | Moez Echargui v Ornago, Fabrizio | 6-4,2-6,0-6 |
| ITF Tunisia F29 | 2018/09/01 12:30 | Konecny, Michal v Ornago, Fabrizio | 3-6,3-6 |