Stadium: Court 10 Round: 62 Ground: Hardcourt outdoor
| ITF Portugal F15 | 2018/08/11 14:00 | Valentin De Carvalho v Tomas Almeida | 4-6,0-6 |
| ITF Portugal F14 | 2018/08/06 08:30 | Tomas Almeida v Valentin De Carvalho | 6-0,6-3 |
| ITF Portugal F13 | 2018/07/28 08:30 | Valentin De Carvalho v Henrique W Osorio | 1-6,1-6 |
| ITF Bahrain F1 Qual | 2018/03/17 12:50 | Valentin De Carvalho v Janji Soquino | 3-6,3-6 |
| ITF Qatar F3 Qual | 2018/03/10 08:00 | Aydan Gomez Osorio v Valentin De Carvalho | 7-6,6-4 |
| ITF Qatar F2 Qual | 2018/03/03 11:55 | Valentin De Carvalho v Levente Godry | 0-6,2-6 |
| ITF Qatar F1 Qual | 2018/02/25 17:15 | Juan Ignacio Batalla v Valentin De Carvalho | 6-7,6-2,6-1 |
| ITF Turkey F4 | 2018/01/27 07:30 | Danil Spasibo v Valentin De Carvalho | 6-2,6-2 |
| ITF Portugal F13 | 2018/07/30 09:00 | Simao Alves v Egill Sigurdsson | 7-6,3-6,6-2 |
| ITF Portugal F13 | 2018/07/29 13:30 | Egill Sigurdsson v Guilherme Valdoleiros | 6-3,5-7,6-2 |
| ITF Portugal F13 | 2018/07/28 08:30 | Illia Stoliar v Egill Sigurdsson | 2-6,0-6 |
| ITF Portugal F12 Qual | 2018/07/22 09:00 | Gabriel Ciro Da Silva v Egill Sigurdsson | 6-2,6-0 |
| ITF Portugal F11 Qual | 2018/07/01 09:00 | Luis Faria v Egill Sigurdsson | 6-3,6-0 |
| ITF Portugal F10 | 2018/06/23 12:00 | Egill Sigurdsson v Afonso Salgado | 0-6,1-6 |
| ITF Tunisia F22 | 2018/06/02 14:00 | Egill Sigurdsson v Luigi Sorrentino | 1-6,1-6 |
| ITF Tunisia F20 | 2018/05/19 09:00 | Egill Sigurdsson v Philip Sikman | 3-6,5-7 |