Stadium: Court 2 Round: 54 Ground: Hardcourt indoor
| ITF M15 Ostrava | 2021/11/21 13:30 | Barun, Bozo v Simon Sedliak | 7-6,6-3 |
| ITF M15 Zlatibor | 2021/09/14 08:00 | Barun, Bozo v Pjevcevic, Petar | 6-4,0-6,9-11 |
| ITF M15 Ulcinj | 2021/08/30 07:30 | Barun, Bozo v Ioannis Xilas | 4-6,1-6 |
| ITF M15 Novi Sad | 2021/07/27 09:00 | Barun, Bozo v Charles Broom | 4-6,6-7 |
| ITF M15 Novi Sad | 2021/07/26 12:00 | Jirousek, Tomas v Barun, Bozo | 6-3,0-6,4-10 |
| ITF M15 Novi Sad | 2021/07/25 15:00 | Barun, Bozo v Postay, Alan | 6-2,6-3 |
| UTR Pro Tennis Series Zadar | 2021/07/04 07:00 | Barun, Bozo v Sinius, Warren | 6-1,6-0 |
| UTR Pro Tennis Series Zadar | 2021/07/03 12:00 | Barun, Bozo v Khomich, Aleksei | 7-6,6-0 |
| ITF M15 Ostrava | 2021/11/21 09:00 | Radovan Michalik v Patzanovsky, Christopher | 4-6,7-5,8-10 |
| ITF - M15 Héraklion | 2021/11/14 11:00 | Patzanovsky, Christopher v Leopold Zima | 3-6,3-6 |
| ITF - M15 Héraklion | 2021/11/09 07:00 | Kai Lemstra v Patzanovsky, Christopher | 6-2,6-4 |
| ITF - M15 Héraklion | 2021/11/08 09:00 | Poswiat, Moritz v Patzanovsky, Christopher | 5-7,6-1,8-10 |
| ITF - M15 Héraklion | 2021/11/07 11:00 | Paulo Knippling v Patzanovsky, Christopher | 2-6,2-6 |
| ITF M25 Hamburg | 2021/10/17 11:30 | Yannik Steinegger v Patzanovsky, Christopher | 6-3,7-6 |
| ITF M25 Budapest | 2021/09/28 09:40 | Buvaysar Gadamauri v Patzanovsky, Christopher | 6-1,6-2 |
| ITF M25 Budapest | 2021/09/27 10:25 | Patzanovsky, Christopher v Zalan Sandor Savay | 6-3,6-1 |