Stadium: Court 1 Round: 46 Ground: Clay
| Challenger Caltanissetta | 2014/06/13 11:30 | Mate Delic v Joao Souza | 4-6,2-6 |
| Challenger Genova | 2018/09/02 13:05 | Gianluca Mager v Joao Souza | 4-6,4-6 |
| ITF Italy F22 | 2018/08/10 12:40 | Pietro Rondoni v Joao Souza | 6-3,6-7,6-1 |
| ITF Italy F22 | 2018/08/09 15:30 | Elmar Ejupovic v Joao Souza | 3-6,4-6 |
| ITF Italy F22 | 2018/08/08 14:30 | Riccardo Bonadio v Joao Souza | 6-7,6-4,0-6 |
| ITF Italy F22 | 2018/08/07 15:15 | Bruno Santanna v Joao Souza | 4-6,2-6 |
| ITF Italy F21 | 2018/08/04 08:30 | Tomas Martin Etcheverry v Joao Souza | 6-7,4-6 |
| ITF Italy F21 | 2018/08/03 14:30 | Joao Souza v Tobias Simon | 7-6,7-6 |
| ITF Italy F21 | 2018/08/02 18:40 | Joao Pedro Sorgi v Joao Souza | 4-6,5-7 |
| Challenger Genova | 2018/09/02 14:20 | Mate Delic v Manuel Massimino | 6-4,6-1 |
| Challenger Portoroz Qual | 2018/08/05 08:00 | Albano Olivetti v Mate Delic | 6-4,7-6 |
| Challenger Liberec Qual | 2018/07/28 08:00 | Mate Delic v Marvin Moeller | 3-6,1-6 |
| Challenger Perugia Qual | 2018/07/09 08:00 | Ante Pavic v Mate Delic | 6-2,6-4 |
| Challenger Perugia Qual | 2018/07/08 09:40 | Juan Pablo Varillas v Mate Delic | 6-4,3-6,5-7 |
| ITF Bosnia and Herzegovina F1 | 2018/05/18 08:00 | Nerman Fatic v Mate Delic | 6-2,6-3 |
| ITF Bosnia and Herzegovina F1 | 2018/05/17 09:45 | Petr Hajek v Mate Delic | 6-7,5-7 |
| ITF Bosnia and Herzegovina F1 | 2018/05/16 09:00 | Valentin Vanta v Mate Delic | 0-6,1-6 |