Stadium: Centre Court Round: 44 Ground: Clay
| ITF Brazil F4 | 2017/11/27 11:00 | Lucas Bernardo v Gabriel P Tumasonis | 6-7,2-6 |
| ITF Brazil F8 | 2018/11/04 15:30 | Gabriel P Tumasonis v Joao Hinsching | 4-6,2-6 |
| ITF Brazil F8 | 2018/11/03 16:30 | Gabriel P Tumasonis v Hugo Moura | 6-2,6-4 |
| ITF Brazil F7 | 2018/10/27 14:30 | Pedro Gabriel Rodrigues v Gabriel P Tumasonis | 6-1,6-0 |
| ITF Brazil F6 | 2018/10/20 15:30 | Gabriel P Tumasonis v Karl W W Mac-Leay | 3-6,3-6 |
| ITF Brazil F5 | 2018/10/15 14:00 | Joao Hinsching v Gabriel P Tumasonis | 6-0,6-2 |
| ITF Brazil F5 | 2018/10/14 13:00 | Victor Bertoldo v Gabriel P Tumasonis | 1-6,0-6 |
| ITF Spain F29 | 2018/09/23 07:00 | Gabriel P Tumasonis v Max Alcala Gurri | 1-6,3-6 |
| ITF Spain F28 Qual | 2018/09/16 12:00 | Gabriel P Tumasonis v Sergio Barranco | 4-6,6-4,6-7 |
| ITF Brazil F9 | 2018/11/11 14:00 | Rai Vicente de Araujo v Lucas Bernardo | 4-6,4-6 |
| ITF Brazil F7 | 2018/10/28 15:00 | Lucas Bernardo v Paulo A S Dos Santos | 4-6,6-7 |
| ITF Brazil F7 | 2018/10/27 17:00 | Victor Bertoldo v Lucas Bernardo | 6-3,5-7,2-6 |
| ITF Brazil F4 Qual | 2018/05/12 12:00 | Mateo Barreiros Reyes v Lucas Bernardo | 6-4,6-1 |
| ITF Brazil F4 | 2017/11/27 11:00 | Lucas Bernardo v Gabriel P Tumasonis | 6-7,2-6 |