Stadium: Court 14 Round: 25 Ground: Clay
| Challenger Alicante Qual | 2018/03/31 09:55 | Carlos Gomez-Herrera v Guillermo Olaso | 2-6,7-6,7-5 |
| Challenger Marbella Qual | 2018/03/24 19:25 | Federico Gaio v Guillermo Olaso | 7-5,7-6 |
| Challenger Lille | 2018/03/23 19:00 | Guillermo Olaso v Gregoire Barrere | 0-6,1-6 |
| Challenger Lille | 2018/03/21 18:00 | Nicolas Mahut v Guillermo Olaso | 6-7,7-6,3-6 |
| Challenger Lille | 2018/03/20 18:05 | Guillermo Olaso v Yannick Mertens | 5-7,6-1,6-3 |
| Challenger Lille Qual | 2018/03/19 12:30 | Laurynas Grigelis v Guillermo Olaso | 1-6,2-6 |
| Challenger Lille Qual | 2018/03/18 15:55 | Guillermo Olaso v Daniel Masur | 4-6,7-5,6-2 |
| Challenger Lille Qual | 2018/03/17 12:20 | Moez Echargui v Guillermo Olaso | 2-6,6-7 |
| ITF Portugal F6 | 2018/03/27 13:40 | Roberto Ortega-Olmedo v Adrien Bossel | 6-7,6-3,6-3 |
| ITF Portugal F6 Qual | 2018/03/26 10:00 | Adrien Bossel v Duarte Nuno Teixeira | 6-1,6-3 |
| ITF Portugal F6 Qual | 2018/03/25 09:00 | Adrien Bossel v Francesco Paschetto | 6-2,7-5 |
| ITF Portugal F5 | 2018/03/20 11:35 | Adrien Bossel v Maximilian Neuchrist | 5-7,2-6 |
| Challenger Drummondville Qual | 2018/03/12 14:00 | Adrien Bossel v Edward Corrie | 6-7,2-6 |
| Challenger Drummondville Qual | 2018/03/11 16:20 | Adrien Bossel v Raphael A-Laurin | 6-0,6-0 |
| ITF Canada F2 | 2018/03/06 15:00 | Alejandro Gonzalez v Adrien Bossel | 3-6,7-6,6-4 |
| ITF Canada F2 Qual | 2018/03/05 16:00 | Adrien Bossel v Lucas Gomez | 6-7,6-1,6-3 |