Stadium: Court 1 Round: 45 Ground: Clay
| Challenger Mestre Qual | 2018/05/20 10:40 | Juan Ignacio Galarza v Zhizhen Zhang | 6-7,3-6 |
| Challenger Mestre Qual | 2018/05/19 10:35 | Juan Ignacio Galarza v Filippo Piranomonte | 6-1,6-0 |
| Challenger Lisbon Qual | 2018/05/13 12:35 | Alejandro Davidovich Fokina v Juan Ignacio Galarza | 6-3,2-6,7-6 |
| Challenger Lisbon Qual | 2018/05/12 14:00 | Francisco Dias v Juan Ignacio Galarza | 4-6,2-6 |
| Challenger Braga Qual | 2018/05/06 13:25 | Juan Ignacio Galarza v Evan Furness | 4-6,3-6 |
| Challenger Braga Qual | 2018/05/05 14:00 | Juan Ignacio Galarza v Botic Van De Zandschulp | 6-4,6-4 |
| Challenger Ostrava Qual | 2018/04/29 09:00 | Jurij Rodionov v Juan Ignacio Galarza | 4-6,6-3,7-6 |
| Challenger Ostrava Qual | 2018/04/28 10:40 | Julian Lenz v Juan Ignacio Galarza | 6-3,5-7,3-6 |
| ATP Lyon Qual | 2018/05/19 11:00 | Alejandro Gonzalez v Jordi Samper-Montana | 6-3,3-6,5-7 |
| Challenger Puerto Vallarta | 2018/05/01 17:00 | Alejandro Gonzalez v Roberto Cid Subervi | 2-6,7-5,2-6 |
| Challenger Leon | 2018/04/28 20:00 | John-Patrick Smith v Alejandro Gonzalez | 6-4,6-3 |
| Challenger Leon | 2018/04/27 19:30 | Alejandro Gonzalez v Ante Pavic | 3-6,6-4,6-1 |
| Challenger Leon | 2018/04/26 00:20 | Daniel Elahi Galan v Alejandro Gonzalez | 2-6,6-3,4-6 |
| Challenger Leon | 2018/04/24 16:20 | Alejandro Gonzalez v Brayden Schnur | 6-4,6-4 |
| Challenger Guadalajara Qual | 2018/04/16 17:00 | Alejandro Gonzalez v Joao Souza | 4-6,6-0,3-6 |
| Challenger Guadalajara Qual | 2018/04/15 17:40 | Alejandro Gonzalez v Felipe Mantilla | 7-6,7-6 |