| Polish Int. Qual | 2019/09/19 07:35 | Gajda, Piotr v Brian Holtschke | W | 0-2 |
| Hellas Open Qual | 2019/08/08 10:45 | Brian Holtschke v Lim, Chong King | L | 0-2 |
| Hellas Open Qual | 2019/08/08 08:55 | Filip Spoljarec v Brian Holtschke | W | 0-2 |
| Hellas Open Qual | 2019/08/08 07:00 | Nenchev, Dimitar v Brian Holtschke | W | 0-2 |
| Lithuanian Int. Qual | 2019/06/07 06:00 | Brian Holtschke v Dubowski, Mateusz | L | 0-2 |
| Lithuanian Int. Qual | 2019/06/06 14:00 | Vilius Bagdanavicius v Brian Holtschke | W | 0-2 |
| Lithuanian Int. Qual | 2019/06/06 08:20 | Brian Holtschke v O Brien, Jack Joseph | W | 2-0 |
| Open de Suisse - Doubles Femmes - Qualif. | 2018/09/27 15:05 | Mads Christophersen v Brian Holtschke | L | 2-0 |
| Spanish Int. Qual | 2019/06/13 07:00 | Arnaud Merkle v Tobias Kuenzi | L | 2-0 |
| Spanish Int. Qual | 2019/06/12 12:30 | Marritt, Alex v Tobias Kuenzi | W | 0-2 |
| Sudirman Cup | 2019/05/20 04:00 | Tobias Kuenzi v Sames, Mark | L | 1-2 |
| Hellas Int. | 2019/05/05 06:30 | Tobias Kuenzi v Dimitar Yanakiev | L | 0-2 |
| Hellas Int. | 2019/05/04 14:40 | Tobias Kuenzi v Collins Valentine Filimon | W | 2-0 |
| Hellas Int. | 2019/05/04 08:05 | Julien Carraggi v Tobias Kuenzi | W | 1-2 |
| Hellas Int. | 2019/05/03 10:00 | Abildgaard, Patrick v Tobias Kuenzi | W | 0-2 |
| Croatian Int. | 2019/04/20 08:30 | Tobias Kuenzi v B.M. Rahul Bharadwaj | L | 0-2 |