Stadium: Court 1 Round: 25 Ground: Clay
| ITF M25 Kassel | 2019/07/19 12:00 | Doumbia, Sadio v Guenther, Valentin | 7-5,6-2 |
| ITF M25 Kassel | 2019/07/18 09:00 | Marek Gengel v Guenther, Valentin | 7-6,2-6,4-6 |
| 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 |
| Santa Cristina Val Gardena, Singles M-ITF-ITA-18A | 2019/08/13 12:25 | Fellin, Manfred v Facundo Diaz Acosta | 2-6,3-6 |
| Agadir, Singles Qualifying M-ITF-MAR-03A | 2019/08/01 11:15 | Turchetti, Nicolo v Fellin, Manfred | 3-6,6-1,6-4 |
| Agadir, Singles Qualifying M-ITF-MAR-03A | 2019/07/31 12:20 | Fellin, Manfred v Mayeul Darras | 6-3,3-6,6-4 |
| ITF M15 Casablanca | 2019/07/23 12:35 | Fellin, Manfred v Kilani, Yassir | 6-4,4-6,4-6 |
| Tanger, Singles M-ITF-MAR-01A | 2019/07/17 09:00 | Fellin, Manfred v Lozan, Kristian | 4-6,3-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/07/11 08:00 | Arreche, Nicolas Alberto v Fellin, Manfred | 6-4,6-2 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/07/10 08:00 | Wakita, Shunsuke v Fellin, Manfred | 2-6,3-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/07/03 08:00 | Fellin, Manfred v Pontoglio, Davide | 3-6,1-6 |