Stadium: Court 9 Vale do Lobo Round: 26
| Challenger Winnipeg Qual | 2018/07/08 15:00 | Jeffrey John Wolf v Luke Johnson | 6-3,6-1 |
| Challenger Ilkley Qual | 2018/06/17 10:00 | Hiroki Moriya v Luke Johnson | 6-3,6-3 |
| ITF Israel F8 | 2018/06/06 07:00 | Peter Kobelt v Luke Johnson | 6-1,6-4 |
| ITF Israel F8 | 2018/06/05 07:30 | Luke Johnson v Bernardo Saraiva | 7-6,6-4 |
| ITF Tunisia F21 | 2018/05/31 09:00 | Luke Johnson v Calin Manda | 3-6,3-6 |
| ITF Tunisia F21 | 2018/05/30 11:30 | Luke Johnson v Keivon Tabrizi | 6-3,6-3 |
| Challenger Loughborough Qual | 2018/05/19 11:25 | Luke Johnson v Sam Barry | 3-6,2-6 |
| ITF Tunisia F16 | 2018/04/26 10:45 | Luke Johnson v Neil Pauffley | 3-6,6-7 |
| ITF Portugal F11 Qual | 2018/07/03 08:30 | Luis Faria v Ben Jones | 3-6,7-6,0-6 |
| ITF Portugal F11 Qual | 2018/07/02 08:30 | Luis Faria v Henrique W Osorio | 6-2,6-4 |
| ITF Portugal F11 Qual | 2018/07/01 09:00 | Luis Faria v Egill Sigurdsson | 6-3,6-0 |
| ITF Portugal F10 | 2018/06/26 10:30 | Benjamin Lock v Luis Faria | 6-4,6-3 |
| ITF Portugal F9 | 2018/06/19 11:20 | Baptiste Crepatte v Luis Faria | 6-4,0-6,6-3 |
| ITF Spain F14 Qual | 2018/06/02 11:00 | Martim L Prata v Luis Faria | 6-1,4-6,6-1 |
| Challenger Lisbon Qual | 2018/05/12 10:40 | Juan Pablo Ficovich v Luis Faria | 4-6,6-3,6-3 |
| ITF Portugal F8 | 2018/04/18 10:00 | Frederico Ferreira Silva v Luis Faria | 6-4,6-1 |