Stadium: Court 2 Round: 54 Ground: Carpet indoor
| ITF M25 Budapest | 2021/09/26 09:30 | Alessandro Pecci v Jancovic, Patrik | 6-4,6-2 |
| ITF M15 Zilina | 2021/08/31 09:30 | Adria Soriano Barrera v Jancovic, Patrik | 6-2,6-1 |
| ITF M15 Zilina | 2021/08/30 13:00 | Jancovic, Patrik v Del Federico, Andrea | 7-6,7-5 |
| ITF M15 Bratislava | 2021/08/23 09:00 | Jancovic, Patrik v Lukas H Lilleengen | 0-6,2-6 |
| Prostejov, Singles M-ITF-CZE-04A | 2021/08/15 10:00 | Jancovic, Patrik v Jan Jermar | 6-7,2-6 |
| Sibenik, Singles M-ITF-CRO-05A | 2021/04/18 10:00 | Sadaoui, Mehdi v Jancovic, Patrik | 7-5,6-1 |
| ITF M15 Bratislava | 2021/03/08 09:00 | Jancovic, Patrik v Minarik, Kristof | 2-6,1-6 |
| ITF M15 Bratislava | 2020/11/23 14:00 | Kai Lemstra v Jancovic, Patrik | 6-2,6-2 |
| ITF M15 Parnu | 2021/10/27 08:25 | Ben Jones v Dominik Kellovsky | 6-3,7-5 |
| ITF M25 Hamburg | 2021/10/19 09:55 | Dominik Kellovsky v Rudolf Molleker | 4-6,6-7 |
| ITF M25 Hamburg | 2021/10/17 16:00 | Obert, Adrian v Dominik Kellovsky | 4-6,1-6 |
| ITF M25 Hamburg | 2021/10/17 09:00 | Larwig, Noel v Dominik Kellovsky | 2-6,2-6 |
| ITF M25 Prague | 2021/10/06 10:15 | Dominik Kellovsky v Milos Karol | 5-7,4-6 |
| ITF M25 Prague | 2021/10/04 09:35 | Dominik Kellovsky v Sizya Ernest Kivanda | 6-3,7-5 |
| ITF M25 Prague | 2021/10/03 09:00 | Dominik Kellovsky v Krystof Zapsky | 6-3,6-0 |
| UTR Pro Tennis Series Ricany | 2021/09/18 07:30 | Dominik Kellovsky v Recek, Dominik | 4-6,6-6 |