Round: 44 Ground: Hardcourt outdoor
| ITF Portugal F14 Qual | 2017/07/30 10:30 | Joao Guerra v Afonso Portugal | 2-6,3-6 |
| ITF Portugal F20 Qual | 2017/09/23 12:00 | Joao Guerra v Alvaro Blanco Damea | 2-6,0-6 |
| ITF Portugal F14 Qual | 2017/07/30 10:30 | Joao Guerra v Afonso Portugal | 2-6,3-6 |
| ITF Portugal F6 | 2017/04/08 14:00 | Joao Guerra v Flemming Peters | 1-6,1-6 |
| 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 |
| ITF Portugal F1 | 2018/02/17 10:00 | Afonso Portugal v Enrique L Rico | 1-6,4-6 |
| ITF Spain F25 | 2017/08/13 11:30 | Afonso Portugal v Anurag Nenwani | 7-6,4-6,3-6 |
| ITF Spain F25 | 2017/08/12 11:30 | Afonso Portugal v Nathan Lavanchy | 6-2,6-0 |
| ITF Portugal F14 Qual | 2017/07/31 10:00 | Afonso Portugal v Mateo Barreiros Reyes | 3-6,6-4,4-6 |