Stadium: Court 3 Round: 26 Ground: Hardcourt indoor
| ITF M15 Antalya | 2019/09/19 07:00 | Jan Zielinski v Marsel Ilhan | 5-7,4-6 |
| ITF M15 Antalya | 2019/09/18 07:40 | Jan Zielinski v Alejandro H Franco | 6-3,7-6 |
| Challenger Szczecin | 2019/09/09 12:15 | Kacper Zuk v Jan Zielinski | 6-7,7-6,6-2 |
| ITF M25 Poznan | 2019/08/20 12:00 | Denis Yevseyev v Jan Zielinski | 7-6,6-0 |
| ITF M25 Bydgoszcz | 2019/08/17 13:20 | Daniel Michalski v Jan Zielinski | 6-3,6-4 |
| ITF M25 Bydgoszcz | 2019/08/16 13:30 | Mohamed Aziz Dougaz v Jan Zielinski | 3-6,3-6 |
| ITF M25 Bydgoszcz | 2019/08/15 08:00 | Jan Zielinski v Yann Wojcik | 6-3,6-4 |
| ITF M25 Bydgoszcz | 2019/08/13 12:00 | Maciej Smola v Jan Zielinski | 3-6,4-6 |
| ITF M25 Chiswick | 2019/08/05 18:40 | Alexis Canter v Daniel Little | 7-6,6-2 |
| ITF M25 Chiswick | 2019/08/05 12:40 | Daniel Little v Edward Hubner | 6-2,6-1 |
| ITF M25 Roehampton | 2019/07/31 17:00 | Charles Broom v Daniel Little | 6-4,6-2 |
| ITF M25 Roehampton | 2019/07/31 12:05 | Alexandros Skorilas v Daniel Little | 3-6,4-6 |
| ITF M25 Roehampton | 2019/07/29 13:55 | Daniel Little v Sahej Maker | 6-3,6-4 |
| ITF M25 Roehampton | 2019/07/29 08:30 | Patrick Foley v Daniel Little | 6-2,1-6,3-10 |