Stadium: Court 3 Round: 25
| ITF Portugal F8 Qual | 2018/04/16 09:30 | Goncalo Falcao v Igor Sao Thiago | 6-4,6-1 |
| ITF Portugal F19 | 2018/10/01 09:00 | Igor Sao Thiago v Manuel Goncalves | 7-5,6-3 |
| ITF Portugal F19 | 2018/09/30 10:30 | Igor Sao Thiago v Joao Ferreira | 6-0,6-2 |
| ITF Portugal F18 | 2018/09/26 11:05 | Fred Gil v Igor Sao Thiago | 6-7,6-1,6-1 |
| ITF Portugal F18 | 2018/09/24 10:55 | Joao Graca v Igor Sao Thiago | 5-7,1-6 |
| ITF Portugal F18 | 2018/09/23 13:00 | Illia Stoliar v Igor Sao Thiago | 6-4,3-6,3-6 |
| ITF Portugal F17 | 2018/09/17 14:45 | Maksim Tikhomirov v Igor Sao Thiago | 6-7,6-2,6-3 |
| ITF Brazil F4 Qual | 2018/05/14 14:50 | Enrique Bogo v Igor Sao Thiago | 6-1,2-6,6-3 |
| ITF Brazil F4 Qual | 2018/05/13 12:00 | Franco Roncadelli v Igor Sao Thiago | 5-7,3-6 |
| ITF Portugal F18 | 2018/09/26 10:25 | Diego Matos v Goncalo Falcao | 6-4,1-6,7-5 |
| ITF Portugal F17 | 2018/09/17 13:00 | Luis Faria v Goncalo Falcao | 7-5,6-2 |
| ITF Portugal F16 | 2018/08/20 09:00 | Jonathan Binding v Goncalo Falcao | 6-4,6-3 |
| ITF Portugal F16 | 2018/08/19 08:30 | Gabriel P Tumasonis v Goncalo Falcao | 5-7,3-6 |
| ITF Portugal F15 | 2018/08/15 10:35 | Joao Monteiro v Goncalo Falcao | 6-4,7-6 |
| ITF Portugal F15 | 2018/08/13 08:30 | Goncalo Falcao v Pedro Gabriel Rodrigues | 6-3,6-0 |
| ITF Portugal F15 | 2018/08/11 08:30 | Goncalo Falcao v Vinod Sridhar | 6-3,6-0 |
| ITF Portugal F14 | 2018/08/10 10:00 | Goncalo Falcao v Frederico Ferreira Silva | 3-6,1-6 |