Round: 62 Ground: Hardcourt outdoor
| ITF Portugal F11 Qual | 2018/07/01 16:00 | Tomas Pinho v Alejandro S Nieto | 2-6,1-6 |
| ITF - Portugal F8 - Qualificação | 2018/04/14 09:30 | Bernardo S Vieira v Alejandro S Nieto | 6-4,6-3 |
| ITF - Portugal F3 | 2018/03/06 16:30 | Dusty H. Boyer v Alejandro S Nieto | 6-2,6-3 |
| ITF - Portugal F2 - Qualificação | 2018/02/24 10:00 | Antonio P Neto v Alejandro S Nieto | 6-3,6-4 |
| ITF Portugal F11 Qual | 2018/07/01 16:00 | Harry Thursfield v Stefan Petrovic | 6-7,4-6 |
| ITF - Portugal F10 | 2018/06/25 12:30 | Stefan Petrovic v Nicolas Rosenzweig | 3-6,2-6 |
| ITF - Bósnia e Herzegovina F2 - Qualificação | 2018/05/19 09:30 | Stefan Petrovic v Andrea Picchione | 3-6,1-6 |
| ITF - Tunísia F17 | 2018/05/03 11:05 | Stefan Petrovic v Maxime Tchoutakian | 2-6,1-6 |
| ITF - Tunísia F17 | 2018/05/02 11:10 | Stefan Petrovic v Mikar Fisher | 6-2,6-4 |
| ITF - Tunísia F17 | 2018/04/29 09:00 | Severin Steiner v Stefan Petrovic | 1-6,2-6 |
| ITF - Tunísia F16 | 2018/04/22 09:00 | Hugo Schott v Stefan Petrovic | 6-2,6-0 |
| ITF - Tunísia F16 | 2018/04/21 09:00 | Stefan Petrovic v Wassily P L Moritz | 6-2,6-1 |