| Challenger Ochsenhausen | 2018/11/20 08:00 | Valerij Rakov v Jakub Kosowski | W | 1-3 |
| Challenger Ochsenhausen | 2018/06/08 06:30 | Valerij Rakov v Jakub Kosowski | W | 1-3 |
| Challenger Ochsenhausen | 2018/06/05 09:00 | Jakub Kosowski v Valerij Rakov | W | 3-0 |
| Challenger Ochsenhausen | 2018/04/18 09:50 | Valerij Rakov v Jakub Kosowski | W | 1-3 |
| Challenger Ochsenhausen | 2018/04/16 11:50 | Jakub Kosowski v Valerij Rakov | W | 3-1 |
| Challenger Ochsenhausen | 2018/03/19 17:00 | Valerij Rakov v Jakub Kosowski | W | 1-3 |
| Challenger Ochsenhausen | 2017/09/07 10:20 | Jakub Kosowski v Valerij Rakov | W | 3-0 |
| Challenger Ochsenhausen | 2017/01/23 12:02 | Valerij Rakov v Jakub Kosowski | W | 1-3 |
| Challenger Ochsenhausen | 2019/05/09 11:50 | Jakub Kosowski v Florian Bluhm | W | 3-0 |
| Challenger Ochsenhausen | 2019/05/09 08:30 | Jakub Kosowski v Evgueni Chtchetinine | W | 3-1 |
| Challenger Ochsenhausen | 2019/05/08 11:50 | Jakub Kosowski v Eduardo Gonzales | W | 3-0 |
| Challenger Ochsenhausen | 2019/05/08 09:10 | Jakub Kosowski v Antonin Gavlas | L | 2-3 |
| Challenger Ochsenhausen | 2019/05/08 06:30 | Jakub Kosowski v Pawel Grela | W | 3-0 |
| Challenger Ochsenhausen | 2019/04/19 12:50 | Daniel Gorak v Jakub Kosowski | L | 3-0 |
| Challenger Ochsenhausen | 2019/04/19 11:50 | Jakub Kosowski v Liang Qiu | W | 3-2 |
| Challenger Ochsenhausen | 2019/04/19 08:30 | Lehel Demeter v Jakub Kosowski | W | 1-3 |
| Challenger Ochsenhausen | 2019/04/02 11:40 | Romain Lorentz v Valerij Rakov | L | 3-0 |
| Challenger Ochsenhausen | 2019/04/02 07:40 | Soumyajit Ghosh v Valerij Rakov | L | 3-1 |
| Challenger Ochsenhausen | 2019/04/01 19:20 | Valerij Rakov v Javier Benito | L | 2-3 |
| Challenger Ochsenhausen | 2019/04/01 16:00 | Valerij Rakov v Mudit Dani | W | 3-0 |
| Challenger Ochsenhausen | 2019/04/01 14:00 | Simon Soderlund v Valerij Rakov | L | 3-0 |
| Challenger Ochsenhausen | 2019/04/01 10:30 | Daniel Kleinert v Valerij Rakov | W | 1-3 |
| Challenger Ochsenhausen | 2019/04/01 07:50 | Sebestyen Kovacs v Valerij Rakov | W | 0-3 |
| Challenger Ochsenhausen | 2019/02/26 12:40 | Pawel Grela v Valerij Rakov | W | 0-3 |