| Hungarian Int. Qual | 2019/10/30 10:20 | Gerberich, Hannes v Gergo Pytel | L | 0-2 |
| Polish Int. Qual | 2019/09/19 08:45 | Klindt, Philip Illum v Gerberich, Hannes | L | 2-0 |
| Belgian Int. Qual | 2019/09/11 10:40 | Gerberich, Hannes v Joran Kweekel | L | 0-2 |
| Kharkiv International 2019, MS, Qualification | 2019/09/05 06:00 | Gerberich, Hannes v Elias Bracke | L | 0-2 |
| Bulgarian Open Qual | 2019/08/12 07:40 | Ouazzen, Martin v Gerberich, Hannes | L | 2-0 |
| Orleans Masters Qual | 2019/03/19 08:35 | Gerberich, Hannes v Elias Bracke | L | 0-2 |
| Open de Suisse - Doubles Femmes - Qualif. | 2019/02/20 09:30 | Gerberich, Hannes v Ogura, Yoshitaka | L | 1-2 |
| Giraldilla Int. XD | 2018/11/29 13:00 | Gunnarsson, Kari v Gerberich, Hannes | L | 2-0 |
| Slovenia Future Series Qual | 2019/11/21 08:25 | Celik, Oguzhan Mehmet v Nicolas A. Mueller | - | away |
| Slovenia Future Series Qual | 2019/11/21 08:00 | Nicolas A. Mueller v Rathore, Rajat | L | 0-2 |
| Hungarian Int. Qual | 2019/10/30 12:20 | Nicolas A. Mueller v Tsai, Andy | L | 0-2 |
| Cyprus Int. | 2019/10/11 09:20 | Nicolas A. Mueller v Julien Carraggi | L | 0-2 |
| Cyprus Int. Qual | 2019/10/10 13:30 | Pissis, Orestis v Nicolas A. Mueller | W | 0-2 |
| Cyprus Int. Qual | 2019/10/10 11:30 | Hailis, Christos v Nicolas A. Mueller | W | 0-2 |
| Bulgarian Int. | 2019/10/04 07:00 | Boichinov, Peyo v Nicolas A. Mueller | L | 2-1 |
| Belarus Int. | 2019/08/30 11:10 | Aram Mahmoud v Nicolas A. Mueller | L | 2-0 |