Stadium: Court 10 Round: 62
| ITF Portugal F16 | 2018/08/18 08:30 | Almeida, Eduardo Lobo Da Rosa de v Preston Brown | 3-6,0-6 |
| ITF Portugal F15 | 2018/08/12 11:30 | Preston Brown v Salgado, Afonso | 3-6,6-7 |
| ITF Portugal F15 | 2018/08/11 14:00 | Brancal, Ricardo v Preston Brown | 6-2,1-6,0-6 |
| ITF Ecuador F2 Qual | 2018/07/28 15:00 | Preston Brown v Bisono Estrella, Juan Rafael | 2-6,2-6 |
| ITF Ecuador F1 | 2018/07/23 18:00 | Enrique Bogo v Preston Brown | 6-4,7-5 |
| ITF USA F12 | 2018/04/20 17:30 | Preston Brown v Nezar, Damien | 6-2,6-1 |
| ITF USA F11 | 2018/04/16 14:00 | Preston Brown v Ronald Hohmann | 6-7,1-6 |
| ITF USA F11 | 2018/04/15 12:00 | Tao Mu v Preston Brown | 6-7,4-6 |
| ITF Portugal F16 | 2018/08/18 13:00 | Tavadze, Guga v Eduardo Ribeiro | 2-6,4-6 |
| ITF Portugal F15 | 2018/08/12 08:30 | Tavadze, Guga v Eduardo Ribeiro | 0-6,2-6 |
| ITF Portugal F13 | 2018/07/30 09:00 | Poncelet, Victor v Eduardo Ribeiro | 7-5,7-5 |
| ITF Portugal F13 | 2018/07/29 08:30 | Gamble, Luke Jacob v Eduardo Ribeiro | 1-6,1-6 |
| ITF Portugal F12 | 2018/07/26 12:50 | Bensoussan, Samuel v Eduardo Ribeiro | 6-2,7-5 |
| ITF Portugal F12 | 2018/07/24 12:15 | Graziani, Edoardo v Eduardo Ribeiro | 6-7,4-6 |
| ITF Portugal F12 Qual | 2018/07/23 10:00 | Eduardo Ribeiro v Goncalves, Manuel | 4-6,6-4,6-1 |
| ITF Portugal F12 Qual | 2018/07/22 09:00 | Eduardo Ribeiro v Pujol Navarro, Bruno | 3-6,6-0,6-2 |