Stadium: CC Round: 25 Ground: Clay
| ITF M25 - Pardubice | 2019/06/24 08:00 | Timo Stodder v Ondrej Krstev | 6-2,6-3 |
| ITF M15 - Balatonalmadi | 2019/06/18 08:00 | Ondrej Krstev v Charles Broom | 2-6,3-6 |
| ITF M15 - Balatonalmadi | 2019/06/17 10:30 | Ondrej Krstev v Andras Necz | 6-3,6-3 |
| ITF M25 - Most | 2019/05/31 08:00 | Colin Sinclair v Ondrej Krstev | 6-2,6-3 |
| ITF M25 - Most | 2019/05/30 10:25 | Ondrej Krstev v Jacob Grills | 2-6,6-4,6-3 |
| ITF M25 - Most | 2019/05/28 13:30 | Ondrej Krstev v Daniel Dutra Da Silva | 6-4,6-3 |
| ITF M15 - Antalya | 2019/05/16 07:15 | Ondrej Krstev v Marsel Ilhan | 6-4,4-6,4-6 |
| ITF M15 - Antalya | 2019/05/15 07:15 | Ondrej Krstev v Mate Voros | 4-6,6-4,6-4 |
| ITF M15 - Tabarka | 2019/06/28 08:00 | Daniel Michalski v Andrey Chepelev | 6-7,1-6 |
| ITF M15 - Tabarka | 2019/06/27 10:05 | Daniel Michalski v Anas Fattar | 6-4,6-0 |
| ITF M15 - Tabarka | 2019/06/25 09:40 | Daniel Michalski v Nicolo Turchetti | 6-4,6-2 |
| ITF M15 - Tabarka | 2019/06/18 10:45 | Daniel Michalski v Sebastian Baez | 6-0,1-6,2-6 |
| Challenger Poznan | 2019/06/03 14:35 | Tallon Griekspoor v Daniel Michalski | 4-6,6-3,6-2 |
| ITF M15 - Irpin | 2019/05/21 15:35 | Dmytro Kamynin v Daniel Michalski | 6-2,0-6,7-6 |
| ITF M15 - Sharm El Sheikh | 2019/04/12 08:00 | Daniel Michalski v Kacper Zuk | 6-3,6-2 |
| ITF M15 - Sharm El Sheikh | 2019/04/11 08:00 | Daniel Michalski v Piotr Matuszewski | 6-2,6-1 |