Stadium: Court 4 Round: 54 Ground: Clay
| ITF M25 Kassel | 2019/07/15 15:00 | Diarra, Gibril v Wunder, Markus | 4-6,6-2,11-13 |
| Tunisia F15, Singles Qualifying | 2017/04/15 08:00 | Evan Furness v Wunder, Markus | 6-2,6-0 |
| Tunisia F14, Singles Qualifying | 2017/04/09 10:00 | Petit, Gabriel v Wunder, Markus | 6-2,6-1 |
| Tunisia F14, Singles Qualifying | 2017/04/08 10:30 | Ellen, Keanu v Wunder, Markus | 5-7,2-6 |
| ITF Israel F3 | 2017/03/26 08:00 | Wunder, Markus v Sean Hodkin | 5-7,1-6 |
| ITF Israel F2 | 2017/03/18 07:30 | Zemel, Yankel v Wunder, Markus | 7-5,6-0 |
| Turkey F8, Singles Qualifying | 2017/02/25 08:30 | Wunder, Markus v Khomentovskiy, Matvey | 3-6,3-6 |
| ITF Turkey F7 | 2017/02/18 06:00 | Wakita, Shunsuke v Wunder, Markus | 7-5,7-6 |
| ITF M15 Marburg | 2019/07/11 17:40 | Stanek, Robin v Guenther, Valentin | 6-1,7-6 |
| ITF M15 Marburg | 2019/07/10 13:40 | Guenther, Valentin v Frawley, James | 6-4,7-6 |
| ITF M15 Marburg | 2019/07/08 09:00 | Guenther, Valentin v Kahlke, Jannis | 6-4,6-2 |
| ITF M15 Marburg | 2019/07/08 07:00 | Guenther, Valentin v Bosnjak, Mislav | 3-6,6-1,10-7 |
| Saarlouis, Singles Qualifying M-ITF-GER-07A | 2019/07/03 16:40 | Guenther, Valentin v Baltensperger, Raphael | 2-6,6-7 |
| Saarlouis, Singles Qualifying M-ITF-GER-07A | 2019/07/01 10:00 | Guenther, Valentin v Aaes, Ludvig | 6-1,6-3 |
| Saarlouis, Singles Qualifying M-ITF-GER-07A | 2019/07/01 08:00 | Guenther, Valentin v Bybel, Nicholas | 6-4,6-3 |
| ITF M15 Kamen | 2019/06/26 16:05 | Guenther, Valentin v Peter Heller | 6-4,6-7,1-6 |