Stadium: Court 4 Round: 54 Ground: Hardcourt outdoor
| ITF Dominican Republic F3 | 2018/12/08 15:00 | Konings, Ruben v Gessner, Lucas | 6-2,6-3 |
| ITF Dominican Republic F2 | 2018/12/03 13:00 | Gessner, Lucas v Hinsching, Joao | 2-6,4-6 |
| ITF Dominican Republic F2 | 2018/12/02 15:00 | Gessner, Lucas v Azevedo Pereira E Oliveira, Bernardo | 2-6,6-2,7-5 |
| ITF Dominican Republic F1 | 2018/11/24 16:00 | Gessner, Lucas v Alejandro H Franco | 1-6,2-6 |
| ITF Brazil F9 | 2018/11/11 14:00 | Ono, Vinicius v Gessner, Lucas | 6-4,6-4 |
| ITF Brazil F8 | 2018/11/04 13:00 | Saraiva, Rafael v Gessner, Lucas | 7-6,6-2 |
| ITF Brazil F7 | 2018/10/27 14:30 | Giannella, Joao v Gessner, Lucas | 6-3,6-4 |
| ITF Brazil F6 | 2018/10/20 13:00 | Gessner, Lucas v Giannella, Joao | 4-6,0-6 |
| ITF Brazil F9 | 2018/11/14 13:30 | Eduardo Ribeiro v Joao Lucas Reis da Silva | 1-6,1-6 |
| ITF Brazil F9 | 2018/11/12 16:05 | Eduardo Ribeiro v Costa, Fabio | 7-6,6-2 |
| ITF Brazil F8 | 2018/11/07 14:30 | Jose Pereira v Eduardo Ribeiro | 6-1,6-2 |
| ITF Brazil F8 | 2018/11/05 18:00 | Zarichanskiy, D. v Eduardo Ribeiro | 7-5,2-6,2-6 |
| ITF Brazil F6 | 2018/10/25 17:00 | Eduardo Ribeiro v Daniel Dutra Da Silva | 3-6,4-6 |
| ITF Brazil F6 | 2018/10/23 17:00 | Assuncao Garla, Felipe v Eduardo Ribeiro | 4-6,4-6 |
| ITF Brazil F6 | 2018/10/22 14:20 | Eduardo Ribeiro v Hinsching, Joao | 6-1,6-2 |
| ITF Brazil F6 | 2018/10/21 15:30 | Eduardo Ribeiro v Bendazoli, Gabriel | 7-6,6-3 |