Stadium: P Round: 45
| Challenger Marbella Qual | 2018/03/24 16:30 | Carlos Gomez-Herrera v Lukas Rosol | 6-7,3-6 |
| Challenger Santiago | 2018/03/10 22:00 | Carlos Gomez-Herrera v Marco Cecchinato | 6-1,1-6,1-6 |
| Challenger Santiago | 2018/03/09 20:15 | Jozef Kovalik v Carlos Gomez-Herrera | 3-6,6-7 |
| Challenger Santiago | 2018/03/08 19:45 | Rogerio Dutra Silva v Carlos Gomez-Herrera | 6-4,3-6,3-6 |
| Challenger Santiago | 2018/03/07 15:00 | Facundo Bagnis v Carlos Gomez-Herrera | 1-6,3-6 |
| Challenger Santiago | 2018/03/06 17:50 | Joao Souza v Carlos Gomez-Herrera | 3-6,1-6 |
| Challenger Santiago Qual | 2018/03/05 14:00 | Carlos Gomez-Herrera v Juan Ignacio Londero | 6-2,6-4 |
| Challenger Santiago Qual | 2018/03/04 14:00 | Hugo Dellien v Carlos Gomez-Herrera | 1-6,5-7 |
| 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 Egypt F8 | 2018/03/09 08:00 | Dejan Katic v Guillermo Olaso | 6-4,6-2 |