Stadium: Court 1 Round: 26 Ground: Hardcourt outdoor
| ITF Spain F24 | 2018/08/21 08:30 | Watson, Andrew v Ryan Peniston | 6-2,6-4 |
| ITF Spain F24 | 2018/08/20 09:00 | Watson, Andrew v Li, Yuanfeng | 6-4,6-1 |
| ITF Netherlands F4 | 2018/08/16 08:00 | Mariano Kestelboim v Watson, Andrew | 6-3,6-2 |
| ITF Netherlands F4 | 2018/08/15 08:00 | Borg, Maikel v Watson, Andrew | 6-3,4-6,5-7 |
| ITF Belgium F5 | 2018/07/25 15:30 | Watson, Andrew v Gerritsen, Stephan | 3-6,6-7 |
| ITF Belgium F5 | 2018/07/24 11:00 | Watson, Andrew v Panta Herreros, Jorge Brian | 7-6,5-7,6-3 |
| ITF Netherlands F1 | 2018/06/28 12:35 | Watson, Andrew v Konings, Ruben | 6-3,6-1 |
| ITF Netherlands F1 | 2018/06/26 16:00 | von Massow, George v Watson, Andrew | 6-7,6-7 |
| ITF Spain F24 | 2018/08/21 13:00 | Boris Arias v Boluda-Purkiss, Carlos | 2-6,6-7 |
| Challenger Meerbusch | 2018/08/14 11:10 | Jelle Sels v Boluda-Purkiss, Carlos | 6-3,7-5 |
| Segovia, Spain | 2018/07/31 16:30 | Quiroz, Roberto v Boluda-Purkiss, Carlos | 4-6,6-4,6-4 |
| Challenger Padova | 2018/07/27 17:35 | Guttierrez-Ferrol, Sergio v Boluda-Purkiss, Carlos | 6-2,6-4 |
| Challenger Padova | 2018/07/25 08:30 | Boluda-Purkiss, Carlos v Monteiro, Joao | 6-4,6-3 |
| Challenger San Benedetto | 2018/07/17 15:00 | Vanni, Luca v Boluda-Purkiss, Carlos | 6-0,7-6 |
| ITF Spain F18 | 2018/07/15 11:00 | Boluda-Purkiss, Carlos v Pedro Cachin | 3-6,5-7 |
| ITF Spain F18 | 2018/07/14 13:00 | Boluda-Purkiss, Carlos v Pla Malfeito, Jaume | 6-0,6-4 |