Stadium: Court 4 Round: 54 Ground: Clay
| ITF M25 Pardubice | 2019/06/24 11:00 | Marek Gengel v Zielinski, Jan | 7-5,5-7,9-11 |
| 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 |
| Balatonalmadi, Singles Qualifying M-ITF-HUN-02A | 2019/06/21 08:00 | Georgii Kravchenko v Dubrivnyy, Artem | 4-6,2-6 |
| Balatonalmadi, Singles Qualifying M-ITF-HUN-02A | 2019/06/20 08:00 | Ryan Nijboer v Georgii Kravchenko | 7-5,4-6,3-6 |
| Balatonalmadi, Singles Qualifying M-ITF-HUN-02A | 2019/06/19 11:10 | Nagy, Peter v Georgii Kravchenko | 2-6,2-6 |
| 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 09:00 | Domagoj Biljesko v Georgii Kravchenko | 5-7,7-5,8-10 |
| Irpin, Singles Qualifying M-ITF-UKR-04A | 2019/05/27 10:00 | Georgii Kravchenko v Coelho, Fabio | 6-3,4-6,7-10 |
| Irpin, Singles Qualifying M-ITF-UKR-04A | 2019/05/27 06:30 | Georgii Kravchenko v Beibit Zhukayev | 7-5,7-5 |
| Irpin, Singles Qualifying M-ITF-UKR-04A | 2019/05/20 10:00 | Georgii Kravchenko v Bulitski, Aliaksandr | 7-5,6-7,6-10 |