Stadium: Court 1 Round: 25 Ground: Clay
| ITF Portugal F15 | 2017/08/09 11:05 | Guilherme W Osorio v Goncalo Falcao | 3-6,2-6 |
| ITF Portugal F12 | 2018/07/25 09:30 | Simon Carr v Goncalo Falcao | 7-5,6-4 |
| ITF Portugal F11 | 2018/07/04 08:30 | Goncalo Falcao v Alexandre Ribeiro | 3-6,3-6 |
| ITF Portugal F9 | 2018/06/20 09:00 | Chun Hsin Tseng v Goncalo Falcao | 6-4,6-3 |
| ITF Portugal F9 | 2018/06/18 11:10 | Rayane Oumaouche v Goncalo Falcao | 2-6,3-6 |
| ITF Spain F14 Qual | 2018/06/03 10:40 | Andre Goransson v Goncalo Falcao | 6-0,7-5 |
| ITF Spain F14 Qual | 2018/06/02 11:00 | Benjamin Niv v Goncalo Falcao | 5-7,2-6 |
| Challenger Lisbon Qual | 2018/05/12 11:40 | Goncalo Falcao v Nathaniel Lammons | 6-2,5-7,4-6 |
| ITF Portugal F8 | 2018/04/18 14:20 | Eduard Esteve Lobato v Goncalo Falcao | 6-1,6-0 |
| ITF Portugal F11 | 2018/07/04 14:15 | Pablo Vivero Gonzalez v Guilherme W Osorio | 5-7,6-2,6-4 |
| ITF Portugal F11 Qual | 2018/07/03 08:30 | Elio Jose Ribeiro Lago v Guilherme W Osorio | 4-6,2-6 |
| ITF Portugal F11 Qual | 2018/07/02 11:00 | Maximiliano R-Mayorga v Guilherme W Osorio | 2-6,1-6 |
| ITF Portugal F10 | 2018/06/25 09:30 | Alexander Donski v Guilherme W Osorio | 2-6,7-5,6-4 |
| ITF Portugal F10 | 2018/06/24 12:00 | Manuel Luis Lamelas v Guilherme W Osorio | 1-6,0-6 |
| ITF Portugal F10 | 2018/06/23 15:00 | Renato Van Veggel v Guilherme W Osorio | 1-6,1-6 |
| ITF USA F31 | 2017/09/20 20:45 | Samir Iftikhar v Guilherme W Osorio | 2-6,1-6 |
| ITF USA F31 | 2017/09/20 20:00 | Samir Iftikhar v Guilherme W Osorio | 2-6,1-6 |