| Challenger de Ochsenhausen | 2017/09/06 09:50 | Jakub Kosowski v Jakub Folwarski | W | 2-3 |
| Challenger de Ochsenhausen | 2017/08/09 07:10 | Jakub Kosowski v Jakub Folwarski | L | 3-1 |
| Challenger de Ochsenhausen | 2017/04/17 07:50 | Jakub Kosowski v Jakub Folwarski | L | 3-0 |
| Challenger de Ochsenhausen | 2016/12/12 10:06 | Jakub Kosowski v Jakub Folwarski | W | 1-3 |
| Challenger de Ochsenhausen | 2017/09/07 12:35 | Jakub Folwarski v Frantisek Placek | L | 0-3 |
| Challenger de Ochsenhausen | 2017/09/07 11:00 | Lehel Demeter v Jakub Folwarski | W | 0-3 |
| Challenger de Ochsenhausen | 2017/09/07 09:40 | Jakub Folwarski v Daniel Kiss | W | 3-1 |
| Challenger de Ochsenhausen | 2017/09/06 19:20 | Paul McCreery v Jakub Folwarski | W | 2-3 |
| Challenger de Ochsenhausen | 2017/09/06 16:40 | Frantisek Placek v Jakub Folwarski | W | 0-3 |
| Challenger de Ochsenhausen | 2017/09/06 14:40 | Valerij Rakov v Jakub Folwarski | W | 0-3 |
| Challenger de Ochsenhausen | 2017/09/06 09:50 | Jakub Kosowski v Jakub Folwarski | W | 2-3 |
| Challenger de Ochsenhausen | 2017/09/06 07:10 | Tomasz Tomaszuk v Jakub Folwarski | L | 3-1 |
| Challenger de Ochsenhausen | 2018/04/20 12:50 | Yannick Vostes v Jakub Kosowski | L | 3-0 |
| Challenger de Ochsenhausen | 2018/04/20 12:05 | Jakub Kosowski v Horacio Cifuentes | W | 3-0 |
| Challenger de Ochsenhausen | 2018/04/20 10:30 | Francisco Sanchi v Jakub Kosowski | W | 0-3 |
| Challenger de Ochsenhausen | 2018/04/19 12:30 | Jakub Kosowski v Horacio Cifuentes | L | 1-3 |
| Challenger de Ochsenhausen | 2018/04/19 11:10 | Evgueni Chtchetinine v Jakub Kosowski | W | 1-3 |
| Challenger de Ochsenhausen | 2018/04/19 09:10 | Yannick Vostes v Jakub Kosowski | W | 2-3 |
| Challenger de Ochsenhausen | 2018/04/18 13:10 | Ricardo Jimenez v Jakub Kosowski | W | 1-3 |
| Challenger de Ochsenhausen | 2018/04/18 09:50 | Valerij Rakov v Jakub Kosowski | W | 1-3 |