Round: 54 Ground: Hardcourt outdoor
| ITF Portugal F9 | 2018/06/16 11:30 | Miguel Semedo v Lucas Gessner | 6-2,3-6,6-7 |
| ITF Brazil F4 Qual | 2018/05/13 12:00 | Gabriel Decamps v Lucas Gessner | 6-0,6-1 |
| ITF Brazil F4 Qual | 2018/05/12 12:00 | Lucas Gessner v Eber Tiepermann | 6-1,6-3 |
| ITF Brazil F3 | 2018/05/06 12:30 | Lorenzo Gagliardo v Lucas Gessner | 6-2,6-3 |
| ITF Brazil F2 | 2018/04/29 17:30 | Augusto Laranja v Lucas Gessner | 6-2,6-0 |
| ITF Brazil F1 | 2018/04/21 16:00 | Joao Hinsching v Lucas Gessner | 6-3,6-3 |
| ITF Turkey F14 | 2018/04/07 09:30 | Lucas Gessner v Pelle Boerma | 0-6,3-6 |
| ITF Turkey F13 | 2018/03/31 11:00 | Lucas Gessner v Aliaksandr Prudnikau | 6-7,4-6 |
| ITF Portugal F9 | 2018/06/16 10:00 | Afonso Portugal v Guilherme Silva | 6-2,6-0 |
| ITF Portugal F8 Qual | 2018/04/14 10:30 | Manuel Almeida v Afonso Portugal | 6-2,4-6,7-6 |
| ITF Portugal F7 Qual | 2018/04/08 18:00 | Afonso Portugal v Daniel Batista | 4-6,2-6 |
| ITF Portugal F7 Qual | 2018/04/07 15:30 | Joao Guerra v Afonso Portugal | 3-6,6-2,4-6 |
| ITF Portugal F4 | 2018/03/10 11:00 | Afonso Portugal v Laelson Rodrigues | 6-7,6-1,4-6 |
| ITF Portugal F3 | 2018/03/03 14:00 | Manuel Montalvo Hidalgo v Afonso Portugal | 6-2,6-4 |
| ITF Portugal F2 Qual | 2018/02/25 10:00 | Afonso Portugal v Daniel Batista | 0-6,3-6 |
| ITF Portugal F2 Qual | 2018/02/24 10:00 | Pelle Boerma v Afonso Portugal | 1-6,6-7 |