Stadium: Wisla Centrum 1 Round: 26 Ground: Clay
| ITF Poland F1 | 2018/05/01 11:55 | Jordi Samper-Montana v Adam Chadaj | 6-3,6-3 |
| ITF Portugal F8 | 2018/04/19 10:00 | Eduard Esteve Lobato v Jordi Samper-Montana | 4-6,6-3,7-5 |
| ITF Portugal F8 | 2018/04/18 10:00 | Jordi Samper-Montana v Benjamin Winter Lopez | 6-0,6-1 |
| ITF Portugal F7 | 2018/04/11 14:35 | Pedro Cachin v Jordi Samper-Montana | 1-6,6-4,6-4 |
| Challenger Alicante Qual | 2018/04/01 12:45 | Ivan Gakhov v Jordi Samper-Montana | 6-4,7-5 |
| Challenger Alicante Qual | 2018/03/31 14:55 | Jordi Samper-Montana v Gianluigi Quinzi | 6-2,3-6,6-4 |
| Challenger Marbella Qual | 2018/03/25 14:55 | Jordi Samper-Montana v Federico Gaio | 3-6,6-7 |
| Challenger Marbella Qual | 2018/03/24 16:45 | Noah Rubin v Jordi Samper-Montana | 2-6,6-3,2-6 |
| ITF Poland F1 | 2018/05/01 13:00 | Robert Strombachs v Dan Dowson | 3-6,1-6 |
| ITF Portugal F8 | 2018/04/18 12:00 | Pedro Gabriel Rodrigues v Dan Dowson | 7-5,3-6,1-6 |
| ITF Portugal F8 Qual | 2018/04/16 14:55 | Marc Fornell-Mestres v Dan Dowson | 2-6,0-6 |
| ITF Portugal F8 Qual | 2018/04/14 13:30 | Dan Dowson v Laelson Rodrigues | 6-4,6-2 |
| ITF Portugal F7 Qual | 2018/04/10 08:00 | Dan Dowson v Philipp Davydenko | 2-6,4-6 |
| ITF Portugal F7 Qual | 2018/04/09 08:00 | Omar Salman v Dan Dowson | 3-6,6-7 |
| ITF Portugal F7 Qual | 2018/04/08 12:00 | Dan Dowson v Russell Henderson | 6-4,6-0 |
| ITF Tunisia F12 | 2018/03/28 14:00 | Mariano Kestelboim v Dan Dowson | 6-3,6-0 |