Stadium: Cancha 5 Round: 54
| Challenger Guadalajara Qual | 2018/04/15 17:40 | Gonzalez, Alejandro v Mantilla, Felipe | 7-6,7-6 |
| Challenger Guadalajara Qual | 2018/04/14 20:05 | Gonzalez, Alejandro v Franco Agamenone | 6-2,6-2 |
| Coupe Davis | 2018/04/08 01:40 | Gonzalez, Alejandro v Sorgi, Joao Pedro | 6-3,7-6 |
| Challenger - San Luis Potosí | 2018/03/29 23:20 | Gonzalez, Alejandro v Escobar, Gonzalo | 3-6,4-6 |
| Drummondville, Canada | 2018/03/13 22:45 | Gonzalez, Alejandro v Filip Peliwo | 3-6,6-4,3-6 |
| Canada F2, Singles | 2018/03/08 15:00 | Gonzalez, Alejandro v Dominik Koepfer | 3-6,1-6 |
| Canada F2, Singles | 2018/03/06 15:00 | Gonzalez, Alejandro v Bossel, Adrien | 3-6,7-6,6-4 |
| ITF Canada F1 | 2018/03/02 20:30 | Gonzalez, Alejandro v Ugo Humbert | 4-6,4-6 |
| Challenger Guadalajara Qual | 2018/04/15 17:40 | Glasspool, Lloyd v Souza, Joao Olavo | 6-3,6-7,6-7 |
| Challenger Guadalajara Qual | 2018/04/14 19:05 | Rosas-Zarur, Raul-Isaias v Souza, Joao Olavo | 2-6,0-6 |
| Challenger - Mexique | 2018/04/11 21:05 | Souza, Joao Olavo v Menendez-Maceiras, Adrian | 4-6,6-2,3-6 |
| Challenger - Mexique | 2018/04/10 17:00 | Souza, Joao Olavo v Clezar, Guilherme | 7-6,7-5 |
| Challenger - San Luis Potosí | 2018/03/27 18:00 | Daniel Elahi Galan v Souza, Joao Olavo | 6-7,7-6,7-5 |
| Miami, USA, Qualifying | 2018/03/19 15:35 | Bemelmans, Ruben v Souza, Joao Olavo | 7-5,6-3 |
| Challenger - Santiago | 2018/03/06 17:50 | Souza, Joao Olavo v Gomez-Herrera, Carlos | 3-6,1-6 |
| Challenger Santiago Qual | 2018/03/05 14:00 | Souza, Joao Olavo v Pedro Cachin | 5-7,6-7 |