Stadium: Court 4 Round: 62 Ground: Clay
| ITF Germany F10 | 2017/08/06 13:00 | David Mrazek v Nico Mertens | 4-6,6-7 |
| ITF Spain F2 | 2018/01/20 08:30 | Vital Flurin Leuch v David Mrazek | 3-6,3-6 |
| ITF Czech Republic F12 | 2017/11/27 12:00 | Jonas Trinker v David Mrazek | 6-2,1-6,6-2 |
| ITF Czech Republic F11 Qual | 2017/11/19 09:00 | David Mrazek v David Damian Brna | 3-6,4-6 |
| ITF Czech Republic F9 | 2017/11/06 09:00 | David Mrazek v Antonin Bolardt | 2-6,4-6 |
| ITF Czech Republic F8 Qual | 2017/10/30 11:00 | Marek Semjan v David Mrazek | 6-4,6-2 |
| ITF Germany F10 | 2017/08/06 13:00 | David Mrazek v Nico Mertens | 4-6,6-7 |
| ITF Germany F10 | 2017/08/06 08:00 | David Mrazek v Alexandros Dinopoulos | 6-0,6-1 |
| ITF Slovakia F2 | 2017/07/30 09:00 | David Mrazek v Stepan Holis | 6-2,6-7,1-6 |
| ITF Spain F2 | 2018/01/20 10:15 | Lluis Miralles v Nico Mertens | 1-6,0-6 |
| ITF Turkey F45 | 2017/12/01 07:15 | Nico Mertens v Lenny Hampel | 1-6,0-6 |
| ITF Turkey F45 | 2017/11/30 07:15 | Nico Mertens v Daniil Klimov | 6-1,6-0 |
| ITF Turkey F45 | 2017/11/29 10:00 | Jan Choinski v Nico Mertens | 5-7,6-7 |
| ITF Turkey F45 Qual | 2017/11/27 08:30 | Nico Mertens v Franco Ribero | 6-4,6-0 |
| ITF Turkey F45 Qual | 2017/11/26 06:30 | Nico Mertens v Hamid Reza Nadaf | 7-5,6-1 |
| ITF Turkey F44 | 2017/11/20 07:15 | Nico Mertens v Mohsen Hossein Zade | 0-6,2-6 |
| ITF Turkey F44 | 2017/11/19 07:15 | Nico Mertens v Dmitry Myagkov | 7-5,3-6,6-2 |