Stadium: Court 14 Round: 26
| ITF Portugal F15 | 2018/08/15 12:40 | Jonathan Kanar v Mehluli D A Sibanda | 7-6,6-3 |
| Challenger Segovia Qual | 2018/07/28 12:20 | Karim-Mohamed Maamoun v Jonathan Kanar | 6-3,6-4 |
| Challenger Padova Qual | 2018/07/23 16:25 | Jonathan Kanar v Luca Giacomini | 5-7,4-6 |
| Challenger Padova Qual | 2018/07/21 11:30 | Andreas Haider-Maurer v Jonathan Kanar | 7-5,4-6,6-7 |
| ITF Germany F6 | 2018/07/06 14:55 | Louis Wessels v Jonathan Kanar | 6-1,6-3 |
| ITF Germany F6 | 2018/07/05 11:45 | Gregorio Cordonnier v Jonathan Kanar | 4-6,1-6 |
| ITF Germany F6 | 2018/07/03 17:05 | Daniel Kopeinigg v Jonathan Kanar | 2-6,2-6 |
| ITF Belgium F2 | 2018/06/28 09:00 | Zizou Bergs v Jonathan Kanar | 6-1,6-4 |
| ITF Portugal F15 | 2018/08/15 13:05 | Martim L Prata v Renato Van Veggel | 6-2,6-3 |
| ITF Portugal F11 | 2018/07/04 09:55 | Martim L Prata v Luca Castelnuovo | 6-7,3-6 |
| ITF Portugal F10 | 2018/06/27 10:30 | Martim L Prata v Alexander Donski | 1-6,7-6,3-6 |
| ITF Spain F14 | 2018/06/04 12:40 | Martim L Prata v Alberto Barroso Campos | 1-6,0-6 |
| ITF Spain F14 Qual | 2018/06/03 12:55 | Bruno Mardones v Martim L Prata | 3-6,6-3,4-6 |
| 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 09:00 | Edoardo Eremin v Martim L Prata | 7-5,6-2 |
| Challenger Braga Qual | 2018/05/05 12:30 | Zhizhen Zhang v Martim L Prata | 6-2,6-4 |