Stadium: Court 3 Round: 54 Ground: Hardcourt indoor
| ITF M25 Bolton | 2019/04/01 08:00 | Elliott Farmer v Valentin Guenther | 6-3,7-5 |
| ITF M15 Poitiers | 2019/03/11 16:35 | Pierre Faivre v Valentin Guenther | 6-1,6-2 |
| ITF M15 Poitiers | 2019/03/11 13:05 | Emilien Voisin v Valentin Guenther | 1-6,6-7 |
| ITF M15 Oslo | 2019/03/05 09:00 | Valentin Guenther v Patrick Mayer | 1-6,6-3,9-11 |
| ITF M15 Monastir | 2019/02/07 08:00 | Jacopo Berrettini v Valentin Guenther | 5-7,7-5,7-5 |
| ITF M15 Monastir | 2019/02/06 13:40 | Valentin Guenther v Arnav Mohanty | 6-4,6-0 |
| ITF M15 Monastir | 2019/01/31 11:40 | Corentin Denolly v Valentin Guenther | 6-3,6-4 |
| ITF M15 Monastir | 2019/01/30 09:00 | Simon A Ivanov v Valentin Guenther | 5-7,6-1,2-6 |