Stadium: Court 7 Round: 44 Ground: Clay
| ITF M25 Velenje | 2021/07/04 07:30 | Stefan Cizelj-Zivkovic v Marco Mania | 7-6,6-0 |
| ITF M15 Tbilisi | 2021/05/17 05:30 | Aleksandr Braynin v Stefan Cizelj-Zivkovic | 6-4,6-3 |
| ITF M15 Cairo | 2021/04/18 07:00 | Rimpei Kawakami v Stefan Cizelj-Zivkovic | 6-2,6-2 |
| ITF M15 Cairo | 2021/04/11 08:00 | Stefan Cizelj-Zivkovic v Andrea Gola | 1-6,2-6 |
| ITF M15 La Nucia | 2021/03/08 08:00 | Stefan Cizelj-Zivkovic v Clement Deleersnyder | 2-6,2-6 |
| ITF M15 Sharm El Sheikh | 2021/01/31 13:30 | Luka Pavlovic v Stefan Cizelj-Zivkovic | 6-1,6-2 |
| ITF M15 Heraklion | 2020/02/23 08:00 | Stefan Cizelj-Zivkovic v Ioannis Xilas | 3-6,3-6 |
| ITF M15 Heraklion | 2020/02/16 11:00 | Stefan Cizelj-Zivkovic v Sahar Simon | 1-6,1-6 |
| ITF M25 Velenje | 2021/07/04 07:30 | Elijah Poritzky v Lukas Palovic | 3-6,2-6 |
| ITF M25 Wroclaw | 2021/06/28 11:00 | Mateusz Terczynski v Lukas Palovic | 6-3,6-1 |
| ITF M25 Wroclaw | 2021/06/27 14:00 | Lukas Palovic v Matias Soto | 7-5,7-6 |
| ITF M25 Klosters | 2021/06/21 07:00 | Henry V-D Schulenburg v Lukas Palovic | 6-1,6-3 |
| ITF M25 Klosters | 2021/06/20 07:00 | Jan Sebesta v Lukas Palovic | 2-6,1-6 |
| Challenger Bratislava | 2021/06/06 08:00 | Vit Kopriva v Lukas Palovic | 3-6,6-4,6-1 |
| ITF M15 Sarajevo | 2021/05/30 07:30 | Michele Vianello v Lukas Palovic | 7-5,6-4 |
| ITF M25 Kiseljak | 2021/05/28 15:40 | Lukas Palovic v Francesco Forti | 2-6,3-6 |