Stadium: Court 3 Round: 25 Ground: Carpet indoor
| ITF Germany F5 | 2017/06/27 12:40 | Guenther, Valentin v Peter Heller | 1-6,4-6 |
| ITF Kuwait F2 | 2018/11/11 07:00 | Peter Heller v Constantin Bittoun Kouzmine | 6-4,6-3 |
| ITF Kuwait F2 | 2018/11/10 07:45 | Peter Heller v Daisuke Sumizawa | 6-3,6-4 |
| ITF Kuwait F2 | 2018/11/09 07:15 | Peter Heller v March, Antonio Cayetano | 6-1,6-2 |
| ITF Kuwait F2 | 2018/11/08 07:15 | Peter Heller v Adamson, Alec | 6-4,6-3 |
| ITF Kuwait F2 | 2018/11/06 10:10 | Peter Heller v Stevens, Bart | 6-4,6-3 |
| ITF Kuwait F1 | 2018/11/03 07:00 | Peter Heller v Aidan Mchugh | 5-7,3-6 |
| ITF Kuwait F1 | 2018/11/02 07:00 | Peter Heller v Kai Wehnelt | 4-6,6-2,7-5 |
| ITF Kuwait F1 | 2018/11/01 07:00 | Peter Heller v Johansson, Niklas | 6-1,6-2 |
| ITF Czech Republic F12 | 2018/11/27 10:05 | Guenther, Valentin v Daniel Paty | 7-5,6-3 |
| ITF Czech Republic F12 | 2018/11/26 15:00 | Guenther, Valentin v Michl, Filip | 6-2,6-2 |
| Czech Republic F11, Singles | 2018/11/22 11:20 | Guenther, Valentin v Jiri Lehecka | 1-6,3-6 |
| Czech Republic F11, Singles | 2018/11/21 17:20 | Guenther, Valentin v Robert Strombachs | 6-3,6-4 |
| Czech Republic F11, Singles Qualifying | 2018/11/20 09:00 | Guenther, Valentin v Terczynski, Mateusz | 2-6,6-4,6-4 |
| Czech Republic F11, Singles Qualifying | 2018/11/19 12:30 | Guenther, Valentin v Emilien Voisin | 6-1,6-2 |
| ITF Czech Republic F10 | 2018/11/14 14:40 | Stanek, Robin v Guenther, Valentin | 7-5,7-6 |
| ITF Czech Republic F9 | 2018/11/08 15:10 | Guenther, Valentin v Jonas Forejtek | 4-6,6-7 |