| Czech Open Qual | 2019/09/26 09:00 | Brian Holtschke v Ivancic, Miha | W | 2-0 |
| Polish Int. | 2019/09/20 09:40 | Brian Holtschke v Tobias Kuenzi | L | 0-2 |
| 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 |
| Czech Open Qual | 2019/09/26 08:00 | Matysiak, Michal v Holub, Lukas | W | 0-2 |
| Open de Suisse - Doubles Femmes - Qualif. | 2018/09/27 13:10 | Holub, Lukas v MacGregor, Jack | L | 0-2 |
| Open de Suisse - Doubles Femmes - Qualif. | 2018/09/20 16:55 | Kramer, David v Holub, Lukas | L | 2-0 |
| Giraldilla Int. XD | 2017/09/21 11:00 | Gomola, Michal v Holub, Lukas | W | 0-2 |