Stadium: Court 1 Oberhaching Round: 44 Ground: Carpet indoor
| ITF Portugal F20 | 2017/09/30 10:00 | Yannick Mertens v Pedja Krstin | 3-6,7-6,6-2 |
| ITF Portugal F20 | 2017/09/29 12:45 | Joao Monteiro v Yannick Mertens | 4-6,6-4,4-6 |
| ITF Portugal F20 | 2017/09/28 12:10 | Daniel Masur v Yannick Mertens | 2-6,6-7 |
| ITF Portugal F20 | 2017/09/27 11:25 | Hubert Hurkacz v Yannick Mertens | 4-6,1-6 |
| ITF Portugal F20 | 2017/09/26 09:00 | Jonathan Kanar v Yannick Mertens | 3-6,0-6 |
| ATP Metz Qual | 2017/09/18 11:30 | Peter Gojowczyk v Yannick Mertens | 6-3,6-4 |
| ATP Metz Qual | 2017/09/17 13:50 | Yannick Mertens v Calvin Hemery | 7-5,6-1 |
| Challenger Istanbul | 2017/09/12 11:15 | Mirza Basic v Yannick Mertens | 3-6,6-3,7-5 |
| ITF Germany F12 | 2017/08/20 08:30 | Johannes Bangratz v Gil Uwe Grund | 4-6,3-6 |
| ITF Austria F6 | 2017/08/05 10:00 | Johannes Bangratz v Gabriel Schmidt | 3-6,0-6 |
| ITF Austria F5 | 2017/07/30 08:00 | Johannes Bangratz v Sven Lah | 2-6,0-6 |
| ITF Austria F4 | 2017/07/24 08:00 | Johannes Bangratz v Yvo Panak | 6-7,0-6 |
| ITF Austria F3 | 2017/07/16 08:00 | Charly Zick v Johannes Bangratz | 4-6,6-0,6-3 |
| ITF Austria F2 | 2017/07/08 07:00 | Johannes Bangratz v Remy Bertola | 6-7,3-6 |
| ITF Austria F1 | 2017/07/04 13:10 | Philipp Schroll v Johannes Bangratz | 6-4,1-6,6-4 |
| ITF Austria F1 | 2017/07/02 11:00 | Igor Saveljic v Johannes Bangratz | 1-6,7-5,6-7 |