Stadium: Court 1 Round: 26 Ground: Hardcourt outdoor
| ITF Portugal F5 | 2018/03/21 17:15 | Monteiro, Joao v Sieber, Marc | 5-7,6-3,6-2 |
| Challenger Santiago Qual | 2018/03/04 17:10 | Monteiro, Joao v Juan Pablo Ficovich | 2-6,3-6 |
| Challenger Santiago Qual | 2018/03/03 18:55 | Monteiro, Joao v Thiago Seyboth Wild | 6-4,7-6 |
| Challenger - Punta del Este | 2018/02/26 23:45 | Guido Andreozzi v Monteiro, Joao | 2-6,7-6,6-4 |
| ITF Spain F2 | 2018/01/26 13:00 | Monteiro, Joao v Yunseong Chung | 7-6,5-7,3-6 |
| ITF Spain F2 | 2018/01/25 09:00 | Monteiro, Joao v Rondoni, Pietro | 6-0,6-2 |
| ITF Spain F2 | 2018/01/23 12:35 | Monteiro, Joao v Vega Hernandez, David | 7-6,3-6,6-2 |
| Australian Open Qual | 2018/01/10 05:05 | Monteiro, Joao v Carlos Taberner | 2-6,6-4,5-7 |
| ITF Portugal F5 | 2018/03/21 10:00 | Kenneth Raisma v Mukund Sasikumar | 6-1,7-5 |
| ITF Portugal F5 Qual | 2018/03/19 11:00 | Kenneth Raisma v Perret, Loic | 6-3,6-1 |
| Turkey F8, Singles Qualifying | 2018/03/01 06:30 | Kenneth Raisma v Oscar Jose Gutierrez | 6-7,6-7 |
| Turkey F8, Singles Qualifying | 2018/02/26 06:00 | Kenneth Raisma v Briand, Jurgen | 6-4,4-6,6-4 |
| Turkey F8, Singles Qualifying | 2018/02/25 07:30 | Kenneth Raisma v Yuichiro Inui | 7-6,6-1 |
| ITF Portugal F1 | 2018/02/21 13:10 | Crepaldi, Erik v Kenneth Raisma | 6-3,6-4 |
| ITF Portugal F1 | 2018/02/19 14:00 | Kenneth Raisma v Daniel Batista | 6-1,7-5 |
| ITF Portugal F1 | 2018/02/19 10:00 | Kenneth Raisma v Perez Bascon, Francisco | 6-3,6-4 |