Stadium: Court 5 Round: 26 Ground: Clay
| ITF M25 Kassel | 2019/07/17 11:10 | Marek Gengel v Echazu, Mauricio | 6-2,3-6,6-3 |
| ITF M25 Kassel | 2019/07/16 08:00 | Marek Gengel v Hoeveler, Leon | 6-0,6-2 |
| ITF M15 Marburg | 2019/07/09 09:00 | Marek Gengel v Kai Wehnelt | 2-6,4-6 |
| Ludwigshafen, Allemagne | 2019/07/01 09:00 | Gimeno-Traver, Daniel v Marek Gengel | 6-4,6-4 |
| ITF M25 Pardubice | 2019/06/24 11:00 | Marek Gengel v Zielinski, Jan | 7-5,5-7,9-11 |
| Balatonalmadi, Singles Qualifying M-ITF-HUN-02A | 2019/06/18 08:00 | Marek Gengel v Georgii Kravchenko | 4-6,6-3,9-11 |
| Balatonalmadi, Singles Qualifying M-ITF-HUN-02A | 2019/06/17 08:00 | Marek Gengel v Stepanic, Patrik | 6-2,6-3 |
| ITF M25 Most | 2019/05/29 08:00 | Marek Gengel v Petr Nouza | 6-1,5-7,3-6 |
| ITF M25 Kassel | 2019/07/17 09:30 | Guenther, Valentin v Reboul, Fabien | 6-4,2-6,6-1 |
| ITF M25 Kassel | 2019/07/16 09:25 | Wunder, Markus v Guenther, Valentin | 1-6,5-7 |
| 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 |