Stadium: Center Court Round: 25 Ground: Clay
| ITF Germany F1 | 2016/01/13 12:25 | Florian Fallert v Johannes Haerteis | 4-6,4-6 |
| ITF Switzerland F2 | 2015/03/19 12:00 | Florian Fallert v Johannes Haerteis | 6-3,6-4 |
| ITF Italy F22 | 2018/08/05 09:15 | Florian Fallert v Nicola Vidal | 4-6,2-6 |
| ITF Belgium F6 | 2018/08/01 13:00 | Florian Fallert v Loic Cloes | 1-6,4-6 |
| ITF Italy F15 | 2018/06/17 10:10 | Florian Fallert v Riccardo Roberto | 6-7,1-6 |
| ITF Turkey F20 | 2018/05/24 07:30 | Pierre Faivre v Florian Fallert | 6-1,7-5 |
| ITF Turkey F20 | 2018/05/23 07:30 | Florian Fallert v Antonio Massara | 6-4,6-7,6-4 |
| ITF Turkey F19 | 2018/05/17 09:40 | Florian Fallert v Alexander Boborykin | 2-6,3-6 |
| ITF Turkey F19 | 2018/05/16 07:00 | Florian Fallert v Dan Alexandru Tomescu | 6-3,6-3 |
| ITF Italy F9 | 2018/04/24 12:00 | Florian Fallert v Juan Pablo Ficovich | 1-6,6-2,1-6 |
| Challenger Pullach Qual | 2018/08/04 15:55 | Alexandre Muller v Johannes Haerteis | 7-6,7-5 |
| Challenger Sopot Qual | 2018/07/29 09:00 | Roberto Marcora v Johannes Haerteis | 6-4,7-5 |
| Challenger Sopot Qual | 2018/07/28 10:40 | Johannes Haerteis v Kamil Gajewski | 6-3,6-2 |
| ITF Austria F3 | 2018/07/19 15:00 | Johannes Haerteis v Nerman Fatic | 2-6,6-7 |
| ITF Austria F3 | 2018/07/18 09:30 | Mariano Kestelboim v Johannes Haerteis | 2-6,7-5,2-6 |
| ITF Austria F3 | 2018/07/17 13:15 | Gabriel Huber v Johannes Haerteis | 2-6,1-6 |
| ITF Austria F2 | 2018/07/14 12:00 | Nerman Fatic v Johannes Haerteis | 1-6,6-3,6-1 |
| ITF Austria F2 | 2018/07/13 12:40 | Johannes Haerteis v Eduardo Dischinger | 6-1,1-6,6-3 |