Stadium: Campo Centrale Round: 46 Ground: Clay
| 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 Guadalajara Qual | 2018/04/15 17:40 | Glasspool, Lloyd v Souza, Joao Olavo | 6-3,6-7,6-7 |
| Challenger Guadalajara Qual | 2018/04/14 19:05 | Rosas-Zarur, Raul-Isaias v Souza, Joao Olavo | 2-6,0-6 |
| Challenger - Mexique | 2018/04/11 21:05 | Souza, Joao Olavo v Menendez-Maceiras, Adrian | 4-6,6-2,3-6 |
| Challenger - Mexique | 2018/04/10 17:00 | Souza, Joao Olavo v Clezar, Guilherme | 7-6,7-5 |
| Challenger - San Luis Potosí | 2018/03/27 18:00 | Daniel Elahi Galan v Souza, Joao Olavo | 6-7,7-6,7-5 |
| Challenger Caltanissetta Qual | 2018/06/09 14:25 | Siringo, Alessio v Fortuna, Claudio | 2-6,1-6 |
| ITF Ukraine F2 | 2018/05/17 07:05 | Fortuna, Claudio v Merckx, Jonas | 3-6,2-6 |
| ITF Ukraine F2 | 2018/05/16 12:00 | Giorgio Ricca v Fortuna, Claudio | 6-3,1-6,1-6 |
| ITF Ukraine F2 | 2018/05/15 09:25 | Fortuna, Claudio v Ayap, Sagadat | 6-0,6-3 |
| ITF Ukraine F1 | 2018/05/10 09:10 | Petrone, Alessandro v Fortuna, Claudio | 6-7,6-3,6-1 |
| ITF Ukraine F1 | 2018/05/09 07:00 | Nikita Mashtakov v Fortuna, Claudio | 4-6,6-2,5-7 |
| ITF Ukraine F1 | 2018/05/08 07:00 | Oleg Prihodko v Fortuna, Claudio | 0-6,4-6 |
| Tunisia F14, Singles Qualifying | 2018/04/11 09:00 | Perez Sanz, David v Fortuna, Claudio | 3-6,6-2,6-3 |