Stadium: Hard 13 Round: 25 Ground: Hardcourt outdoor
| Challenger Lexington | 2018/07/31 01:45 | Tom Jomby v Lucas Catarina | 6-2,7-6 |
| Challenger Binghamton | 2018/07/26 23:00 | Lucas Catarina v Marcel Granollers | 2-6,4-6 |
| Challenger Binghamton | 2018/07/26 15:45 | William Blumberg v Lucas Catarina | 4-6,6-2,4-6 |
| Challenger Gatineau Qual | 2018/07/15 20:00 | Lucas Catarina v Justin Boulais | 6-0,5-7,6-7 |
| Challenger Gatineau Qual | 2018/07/15 02:00 | Lucas Catarina v Kento Takeuchi | 6-3,6-3 |
| Challenger Winnetka | 2018/07/10 19:05 | Mohamed Safwat v Lucas Catarina | 6-2,6-4 |
| Challenger Fergana Qual | 2018/06/16 05:00 | Lucas Catarina v Kristian Lozan | 3-6,6-7 |
| ITF Israel F8 | 2018/06/06 10:45 | Ben Patael v Lucas Catarina | 7-6,6-3 |
| ITF Serbia F1 Qual | 2018/08/05 08:00 | Stefan Petrovic v Stefan Skadarka | 5-7,4-6 |
| ITF Serbia F1 Qual | 2018/08/04 07:00 | Stefan Petrovic v Nitin Gunduboina | 7-5,6-3 |
| ITF Portugal F11 Qual | 2018/07/03 08:30 | Mark Whitehouse v Stefan Petrovic | 6-2,7-5 |
| ITF Portugal F11 Qual | 2018/07/02 11:00 | Alejandro S Nieto v Stefan Petrovic | 3-6,6-7 |
| 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 Bosnia and Herzegovina F2 Qual | 2018/05/19 09:30 | Stefan Petrovic v Andrea Picchione | 3-6,1-6 |
| ITF Tunisia F17 | 2018/05/03 11:05 | Stefan Petrovic v Maxime Tchoutakian | 2-6,1-6 |