Stadium: Center Court Round: 26 Ground: Clay
| ITF Italy F10 | 2018/05/18 12:00 | Giovanni Fonio v Bastian Malla | 1-6,4-6 |
| ITF Italy F10 | 2018/05/17 11:00 | Giovanni Fonio v Jannik Sinner | 6-3,6-3 |
| ITF Italy F10 | 2018/05/16 11:00 | Giovanni Fonio v Davide Della Tommasina | 7-6,3-6,6-3 |
| ITF Italy F9 | 2018/05/14 11:00 | Matthias Haim v Giovanni Fonio | 3-6,3-6 |
| Challenger Rome | 2018/05/08 08:30 | Patricio Heras v Giovanni Fonio | 6-4,3-6,7-5 |
| ITF Italy F9 | 2018/04/27 12:00 | Giovanni Fonio v Adrian Bodmer | 7-5,2-6,5-7 |
| ITF Italy F9 | 2018/04/26 13:50 | Billy Harris v Giovanni Fonio | 0-6,6-2,3-6 |
| ITF Italy F9 | 2018/04/25 12:00 | Giovanni Fonio v Filip Horansky | 6-3,6-3 |
| Challenger Guadalajara | 2018/04/17 20:15 | Joao Souza v Gonzalo Escobar | 6-2,3-6,5-7 |
| 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 | Lloyd Glasspool v Joao Souza | 6-3,6-7,6-7 |
| Challenger Guadalajara Qual | 2018/04/14 19:05 | Raul-Isaias Rosas-Zarur v Joao Souza | 2-6,0-6 |
| Challenger Mexico City | 2018/04/11 21:05 | Joao Souza v Adrian Menendez-Maceiras | 4-6,6-2,3-6 |
| Challenger Mexico City | 2018/04/10 17:00 | Joao Souza v Guilherme Clezar | 7-6,7-5 |
| Challenger San Luis Potosi | 2018/03/27 18:00 | Daniel Elahi Galan v Joao Souza | 6-7,7-6,7-5 |
| ATP Miami Qual | 2018/03/19 15:35 | Ruben Bemelmans v Joao Souza | 7-5,6-3 |