Stadium: Hard Court 3 Round: 27 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2019/11/15 08:00 | Jan Zielinski v Vasil Kirkov | 6-3,6-3 |
| ITF M15 Heraklion | 2019/11/12 13:05 | Tom Kocevar-Desman v Jan Zielinski | 1-6,4-6 |
| ITF M15 Sharm El Sheikh | 2019/10/30 11:25 | Jan Zielinski v Kacper Zuk | 3-6,3-6 |
| ITF M15 Sharm El Sheikh | 2019/10/23 08:00 | Karim-Mohamed Maamoun v Jan Zielinski | 7-5,6-2 |
| ITF M25 Falun | 2019/10/01 11:00 | Antoine Bellier v Jan Zielinski | 6-4,6-4 |
| ITF M25 Falun | 2019/09/30 09:10 | Jan Zielinski v Jonathan Stenberg | 6-3,6-4 |
| ITF M25 Falun | 2019/09/29 12:00 | Jan Zielinski v Jakob Arvidsson Ehn | 6-2,6-1 |
| ITF M25 Stockholm | 2019/09/27 10:00 | Kacper Zuk v Jan Zielinski | 6-3,6-1 |
| ITF M15 Heraklion | 2019/11/05 08:30 | Jonas Trinker v Thomas Fancutt | 4-6,4-6 |
| ITF M15 Liberec | 2019/10/22 12:40 | Andrew Paulson v Jonas Trinker | 6-4,6-4 |
| ITF M25 Santa Margherita | 2019/10/09 12:00 | Nerman Fatic v Jonas Trinker | 6-2,3-6,6-4 |
| ITF M25 Santa Margherita | 2019/10/08 10:30 | Jonas Trinker v Nicolas Parizzia | 3-6,6-4,6-3 |
| ITF M25 Santa Margherita | 2019/10/01 13:45 | Nino Serdarusic v Jonas Trinker | 6-1,6-2 |
| ITF M15 Targu Mures | 2019/09/19 10:30 | Bogdan Ionut Apostol v Jonas Trinker | 6-3,7-5 |
| ITF M15 Targu Mures | 2019/09/18 11:50 | George Botezan v Jonas Trinker | 5-7,6-4,4-6 |
| ITF M15 Brasov | 2019/09/11 13:20 | Dan Alexandru Tomescu v Jonas Trinker | 7-6,6-4 |