Stadium: Indoor P3 Round: 44 Ground: Hardcourt outdoor
| ITF Portugal F5 | 2018/03/21 14:10 | Pablo Vivero Gonzalez v Miliaan Niesten | 6-2,6-3 |
| ITF Portugal F5 Qual | 2018/03/19 11:00 | Miliaan Niesten v Pedro Gabriel Rodrigues | 6-1,6-4 |
| ITF Portugal F5 Qual | 2018/03/18 12:30 | Miliaan Niesten v Jonathan Binding | 4-6,6-3,6-1 |
| ITF Portugal F4 | 2018/03/14 11:20 | Peter Bothwell v Miliaan Niesten | 6-4,6-2 |
| ITF Portugal F4 | 2018/03/13 11:00 | Lucas Hellfritsch v Miliaan Niesten | 0-6,2-6 |
| ITF Portugal F3 | 2018/03/10 13:35 | Frederico Ferreira Silva v Miliaan Niesten | 6-2,6-3 |
| ITF Portugal F3 | 2018/03/08 13:30 | Marc-Andrea Huesler v Miliaan Niesten | 2-6,1-6 |
| ITF Thailand F12 Qual | 2017/12/11 03:00 | Miliaan Niesten v Socrates Leon Tsoronis | 6-2,6-3 |
| ITF Portugal F7 Qual | 2018/04/07 15:30 | Duarte Nuno Teixeira v Laelson Rodrigues | 7-6,6-2 |
| ITF Portugal F6 Qual | 2018/03/26 10:00 | Adrien Bossel v Duarte Nuno Teixeira | 6-1,6-3 |
| ITF Portugal F5 Qual | 2018/03/18 14:30 | Pedro Gabriel Rodrigues v Duarte Nuno Teixeira | 6-0,6-2 |
| ITF Portugal F2 Qual | 2018/02/24 10:00 | Bart Van Den Berg v Duarte Nuno Teixeira | 6-1,6-0 |
| ITF Portugal F21 | 2017/10/01 13:00 | Aleksei Nerushenko v Duarte Nuno Teixeira | 7-6,6-1 |
| ITF Portugal F20 Qual | 2017/09/23 09:30 | Duarte Nuno Teixeira v Nathan Lavanchy | 5-7,2-6 |
| ITF Portugal F19 | 2017/09/16 10:00 | Tomas Almeida v Duarte Nuno Teixeira | 6-2,6-1 |
| ITF Portugal F17 | 2017/08/19 10:30 | Richard Yang v Duarte Nuno Teixeira | 6-3,6-0 |