Stadium: Central Round: 46
| Challenger Gatineau Qual | 2018/07/15 02:00 | Lucas Catarina v Takeuchi, Kento (1987) | 6-3,6-3 |
| Winnetka, USA | 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 Lozan, Kristian | 3-6,6-7 |
| ITF Israel F8 | 2018/06/06 10:45 | Patael, Ben v Lucas Catarina | 7-6,6-3 |
| ITF Israel F8 | 2018/06/05 07:30 | Hoyt, Evan v Lucas Catarina | 6-7,4-6 |
| ITF Tunisia F21 | 2018/06/02 09:00 | Lucas Catarina v Moez Echargui | 1-6,3-6 |
| ITF Tunisia F21 | 2018/06/01 09:00 | Lucas Catarina v Hady Habib | 7-6,3-6,6-3 |
| ITF Tunisia F21 | 2018/05/31 10:25 | Lucas Catarina v Chaudhry, Shamael | 7-6,7-5 |
| Challenger Gatineau Qual | 2018/07/15 00:45 | Boulais, Justin v Volfson, David | 6-3,6-2 |
| ITF Canada F5 | 2018/07/05 20:45 | Boulais, Justin v Grills, Jacob | 7-5,1-6,3-6 |
| ITF Canada F5 | 2018/07/05 00:20 | Douglas, Jake v Boulais, Justin | 2-6,1-6 |
| ITF Canada F4 | 2018/06/29 00:00 | Boulais, Justin v Steven Diez | 3-6,3-6 |
| ITF Canada F4 | 2018/06/26 17:00 | Boulais, Justin v Kirkov, Vasil | 6-4,6-4 |
| ITF Canada F3 | 2018/06/19 16:00 | Boulais, Justin v Kirkov, Vasil | 6-2,3-6,4-6 |
| ITF Canada F3 Qual | 2018/06/18 17:25 | Gervais, Washi v Boulais, Justin | 3-6,4-6 |
| Challenger Drummondville Qual | 2018/03/11 19:05 | Boulais, Justin v Bambridge, Luke | 3-6,2-6 |