Stadium: Court 7 Round: 54 Ground: Clay
| ITF M15 Balatonalmadi | 2019/06/18 08:00 | Marek Gengel v Georgii Kravchenko | 4-6,6-3,9-11 |
| ITF M15 Balatonalmadi | 2019/06/17 08:00 | Marek Gengel v Patrik Stepanic | 6-2,6-3 |
| ITF M25 Most | 2019/05/29 08:00 | Marek Gengel v Petr Nouza | 6-1,5-7,3-6 |
| ITF M25 Jablonec Nad Nisou | 2019/05/23 08:00 | Marek Gengel v Patrik Rikl | 5-7,1-6 |
| ITF M15 Prague | 2019/05/17 08:00 | Marek Gengel v Vit Kopriva | 4-6,3-6 |
| ITF M15 Prague | 2019/05/16 08:00 | Jiri Lehecka v Marek Gengel | 6-3,6-7,4-6 |
| ITF M15 Prague | 2019/05/15 08:00 | Marek Gengel v Antonin Stepanek | 5-7,6-2,6-3 |
| ITF M15 Prague | 2019/05/13 10:00 | Marek Gengel v Keivon Tabrizi | 7-5,6-2 |
| ITF USA F29 | 2018/11/01 20:00 | Jan Zielinski v Haru Inoue | 5-7,5-7 |
| ITF USA F29 | 2018/10/30 16:35 | Cameron Green v Jan Zielinski | 4-6,3-6 |
| ITF Poland F6 | 2018/08/11 10:00 | Jan Zielinski v Maciej Rajski | 5-7,1-6 |
| ITF Poland F6 | 2018/08/10 10:00 | Pawel Juszczak v Jan Zielinski | 6-2,6-7,1-6 |
| ITF Poland F6 | 2018/08/08 11:00 | Jan Zielinski v Eduardo Dischinger | 6-3,6-3 |
| ITF Poland F6 | 2018/08/07 10:35 | Piotr Galus v Jan Zielinski | 3-6,5-7 |
| ITF Poland F6 Qual | 2018/08/06 08:00 | Max Steinberger v Jan Zielinski | 4-6,0-6 |
| ITF Poland F6 Qual | 2018/08/05 12:30 | Jan Zielinski v Norbert Tadyszak | 6-0,6-0 |