Stadium: Center Court Round: 45 Ground: Carpet indoor
| ITF Italy F14 | 2018/06/13 14:20 | Riccardo Bellotti v Johannes Haerteis | 6-3,6-2 |
| ITF Italy F14 | 2018/06/12 18:25 | Lorenzo Frigerio v Johannes Haerteis | 7-5,2-6,4-6 |
| ITF Italy F14 Qual | 2018/06/10 08:30 | Johannes Haerteis v Alessandro Ceppellini | 6-2,6-0 |
| ITF Italy F14 Qual | 2018/06/09 07:00 | Johannes Haerteis v Janis Podzus | 6-2,5-7,6-1 |
| Challenger Loughborough Qual | 2018/05/21 09:30 | Johannes Haerteis v Frederik Nielsen | 6-7,1-6 |
| Challenger Loughborough Qual | 2018/05/20 09:30 | Viktor Durasovic v Johannes Haerteis | 6-7,5-7 |
| Challenger Loughborough Qual | 2018/05/19 11:10 | Johannes Haerteis v Sean Hodkin | 6-3,6-7,6-4 |
| ITF Israel F6 | 2018/05/11 07:30 | Johannes Haerteis v Matias Franco Descotte | 2-6,4-6 |
| Challenger Eckental Qual | 2017/10/28 16:50 | Tim Puetz v Tim Hofmann | 6-0,6-3 |
| Challenger Eckental Qual | 2016/10/29 10:45 | Tim Hofmann v David Pichler | 0-6,0-6 |
| ITF Germany F13 | 2016/10/04 07:30 | Gabriel Donev v Tim Hofmann | 6-2,6-2 |