| European Team Championships MD | 2020/02/12 16:00 | Geiss/Volker v Alhasanov/Huseynov | W | 2-0 |
| Italian Int. - Duplas Masculinas | 2019/12/15 09:20 | Popov/Popov v Geiss/Volker | W | 0-2 |
| Italian Int. - Duplas Masculinas | 2019/12/14 17:00 | Adam/Maio v Geiss/Volker | W | 1-2 |
| Italian Int. - Duplas Masculinas | 2019/12/14 10:15 | Geiss/Volker v Druzchenko/Kolesnik | W | 2-0 |
| Italian Int. - Duplas Masculinas | 2019/12/13 18:40 | Stoffersen/Vestergaard v Geiss/Volker | W | 1-2 |
| Open da Escócia - Duplas Masculinas | 2019/11/22 17:30 | Geiss/Volker v Wei/Wu | L | 0-2 |
| Open da Escócia - Duplas Masculinas | 2019/11/22 13:40 | Geiss/Volker v Kaisti/Larkimo | W | 2-1 |
| SaarLorLux Open MD | 2019/10/31 17:15 | Jansen/Kaesbauer v Geiss/Volker | L | 2-0 |