Stadium: Court 3 Round: 25 Ground: Clay
| UTR Pro Tennis Series Blaricum | 2022/04/05 08:00 | Marcel Zielinski v Roland Stuurman | 3-6,4-6 |
| UTR Pro Tennis Series Blaricum | 2022/04/04 13:30 | Marcel Zielinski v Ivan Penev | 6-0,6-4 |
| UTR Pro Tennis Series Blaricum | 2022/04/03 11:00 | Miko Wassermann v Marcel Zielinski | 2-6,1-5 |
| ITF M25 Antalya | 2022/03/17 07:00 | Viacheslav Bielinskyi v Marcel Zielinski | 6-4,6-4 |
| ITF M25 Antalya | 2022/03/15 07:00 | Matas Vasiliauskas v Marcel Zielinski | 2-6,2-6 |
| UTR Pro Tennis Series Amsterdam | 2022/03/06 09:00 | Max Houkes v Marcel Zielinski | 7-5,6-3 |
| UTR Pro Tennis Series Amsterdam | 2022/03/05 12:00 | Thorsten Sollie v Marcel Zielinski | 5-7,3-6 |
| UTR Pro Tennis Series Amsterdam | 2022/03/03 10:30 | Marcel Zielinski v Yanais Laurent | 6-3,7-5 |
| ITF M15 Sarajevo | 2022/06/10 08:15 | David Pichler v Lorenzo Rottoli | 3-6,4-6 |
| ITF M15 Sarajevo | 2022/06/08 09:50 | David Pichler v Adam Moundir | 6-2,6-3 |
| ITF M25 Osijek | 2022/05/20 11:30 | David Pichler v Timo Legout | 3-6,2-6 |
| ITF M25 Osijek | 2022/05/19 08:00 | David Pichler v Paul Valsecchi | 6-2,6-3 |
| ITF M25 Osijek | 2022/05/18 09:25 | David Pichler v Tomislav Podvinski | 6-4,6-2 |
| ITF M15 Cairo | 2022/05/04 08:00 | David Pichler v Vlad Andrei Dancu | 6-1,6-7,6-7 |
| ITF M25 Cairo | 2022/04/27 12:25 | Colin Sinclair v David Pichler | 6-7,6-3,6-4 |
| Challenger Sanremo | 2022/04/03 14:30 | Matteo Martineau v David Pichler | 2-6,6-2,6-4 |