| 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 | Vasiliauskas, Matas 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 | Sollie, Thorsten 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 |
| UTR Pro Tennis Series Amsterdam | 2022/03/02 13:30 | Marcel Zielinski v Rob Van Den Berg | 6-3,6-4 |
| UTR Pro Tennis Series Amsterdam | 2022/03/01 10:30 | Marcel Zielinski v Eisinga, Zachary | 7-6,7-5 |
| UTR Pro Tennis Series Barcelona | 2022/04/02 07:30 | Penev, Ivan v David Jorda Sanchis | 1-6,3-5 |
| UTR Pro Tennis Series Barcelona | 2022/03/31 14:08 | Penev, Ivan v Milushev, Plamen | 6-2,1-0 |
| UTR Pro Tennis Series Barcelona | 2022/03/31 09:30 | Penev, Ivan v Mas de Ugarte, Jordi | 3-6,4-5 |
| UTR Pro Tennis Series Barcelona | 2022/03/29 09:00 | Penev, Ivan v Broville, Maxence | 7-5,6-3 |
| UTR Pro Tennis Series Barcelona | 2022/03/28 07:30 | Penev, Ivan v Pierre, Hugo | 5-7,1-5 |
| UTR Pro Tennis Series Barcelona | 2022/03/27 15:30 | Penev, Ivan v David Redondo | 2-6,6-4,2-1 |
| UTR Pro Tennis Series Bucharest | 2022/03/09 09:00 | Cazacu, Dragos Nicolae v Penev, Ivan | 6-2,6-2 |
| UTR Pro Tennis Series Bucharest | 2022/03/07 11:00 | Ignat, Dragos Constantin v Penev, Ivan | 6-4,7-6 |