Stadium: Court 7 Round: 54 Ground: Clay
| Balatonalmadi, Singles Qualifying M-ITF-HUN-02A | 2019/06/18 08:00 | Marek Gengel v Georgii Kravchenko | 4-6,6-3,9-11 |
| Balatonalmadi, Singles Qualifying M-ITF-HUN-02A | 2019/06/17 08:00 | Marek Gengel v Stepanic, Patrik | 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 Stepanek, Antonin | 5-7,6-2,6-3 |
| ITF M15 Prague | 2019/05/13 10:00 | Marek Gengel v Tabrizi, Keivon | 7-5,6-2 |
| ITF USA F29 | 2018/11/01 20:00 | Zielinski, Jan v Inoue, Haru | 5-7,5-7 |
| ITF USA F29 | 2018/10/30 16:35 | Green, Cameron v Zielinski, Jan | 4-6,3-6 |
| ITF Poland F6 | 2018/08/11 10:00 | Zielinski, Jan v Maciej Rajski | 5-7,1-6 |
| ITF Poland F6 | 2018/08/10 10:00 | Pawel Juszczak v Zielinski, Jan | 6-2,6-7,1-6 |
| ITF Poland F6 | 2018/08/08 11:00 | Zielinski, Jan v Dischinger, Eduardo | 6-3,6-3 |
| ITF Poland F6 | 2018/08/07 10:35 | Galus, Piotr v Zielinski, Jan | 3-6,5-7 |
| ITF Poland F6 Qual | 2018/08/06 08:00 | Steinberger, Max v Zielinski, Jan | 4-6,0-6 |
| ITF Poland F6 Qual | 2018/08/05 12:30 | Zielinski, Jan v Tadyszak, Norbert | 6-0,6-0 |