Stadium: Court 1 Round: 26 Ground: Hardcourt outdoor
| ITF Portugal F12 | 2018/07/25 09:30 | Carr, Simon v Goncalo Falcao | 7-5,6-4 |
| ITF Spain F13 | 2018/05/29 11:35 | Carr, Simon v Pedro Vives Marcos | 6-1,6-2 |
| Challenger Loughborough Qual | 2018/05/20 09:30 | Carr, Simon v Nielsen, Frederik | 3-6,4-6 |
| Challenger Loughborough Qual | 2018/05/19 09:00 | Rose, Joshua v Carr, Simon | 4-6,1-6 |
| ITF Israel F5 | 2018/05/01 10:35 | Carr, Simon v Nikolas Sanchez Izquierdo | 4-6,3-6 |
| ITF Israel F4 | 2018/04/25 09:20 | Bega, Alessandro v Carr, Simon | 6-3,7-6 |
| ITF France F7 | 2018/04/17 09:00 | Wang, Tak Khunn v Carr, Simon | 6-3,6-1 |
| Coupe Davis | 2018/04/07 12:10 | Casper Ruud v Carr, Simon | 6-2,6-1 |
| ITF Portugal F12 | 2018/07/25 14:50 | Daniel Batista v Simon, Tobias | 4-6,3-6 |
| Challenger - Nottingham | 2018/06/12 14:30 | Ward, James v Simon, Tobias | 6-4,6-7,7-6 |
| Challenger Nottingham Qual | 2018/06/11 10:00 | Christopher Eubanks v Simon, Tobias | 3-6,7-6,6-7 |
| Challenger Nottingham Qual | 2018/06/10 10:00 | Alexis Canter v Simon, Tobias | 1-6,2-6 |
| Challenger Nottingham Qual | 2018/06/09 10:00 | Adam Jones v Simon, Tobias | 3-6,4-6 |
| ITF Romania F2 | 2018/05/30 10:45 | Simon, Tobias v Tepavac, Marko | 2-6,3-6 |
| Challenger Loughborough Qual | 2018/05/21 11:25 | Simon, Tobias v Daniel Evans | 4-6,6-7 |
| Challenger Loughborough Qual | 2018/05/20 11:30 | Simon, Tobias v Alexis Canter | 7-5,7-6 |