| UTR Pro Tennis Series Zadar | 2021/06/29 08:00 | Ihor Dudun v Zmak, Deni | 3-6,2-6 |
| UTR Pro Tennis Series Zadar | 2021/06/28 09:30 | Arthus De La Bassetiere v Ihor Dudun | 3-6,6-1,6-1 |
| UTR Pro Tennis Series Barcelona | 2021/06/25 11:00 | Gabarro, Xavier v Ihor Dudun | 6-2,5-1 |
| UTR Pro Tennis Series Barcelona | 2021/06/23 09:30 | Kuzey Cekirge v Ihor Dudun | 6-0,5-1 |
| UTR Pro Tennis Series Barcelona | 2021/06/22 12:30 | Meraut, Tristan v Ihor Dudun | 6-4,3-5 |
| UTR Pro Tennis Series Barcelona | 2021/06/21 14:00 | Ihor Dudun v Perez Sanz, David | 1-6,6-3,6-4 |
| UTR Pro Tennis Series Bucharest | 2021/06/03 07:30 | Ihor Dudun v Mihai Razvan Marinescu | 0-6,1-5 |
| UTR Pro Tennis Series Bucharest | 2021/06/02 12:00 | Ihor Dudun v Sinius, Warren | 4-6,0-6 |
| UTR ProTennis Series Zadar | 2021/06/28 09:30 | Vito Tonejc v Barun, Bozo | 6-3,3-6,5-3 |
| Sarajevo, Singles Main, M-ITF-BIH-05A | 2021/06/02 10:50 | Barun, Bozo v Matheus P De Almeida | 3-6,2-6 |
| Sarajevo, Singles Main, M-ITF-BIH-05A | 2021/06/01 10:30 | Barun, Bozo v Galik, Matej | 6-3,4-6,10-7 |
| Sarajevo, Singles Main, M-ITF-BIH-05A | 2021/05/31 12:00 | Barun, Bozo v Nicolas Zanellato | 6-3,6-1 |
| Sarajevo, Singles Main, M-ITF-BIH-05A | 2021/05/31 08:00 | Barun, Bozo v Randjelovic, Ivan | 6-0,6-2 |
| ITF M25 Kiseljak | 2021/05/27 09:00 | Barun, Bozo v Aldin Setkic | 2-6,4-6 |
| ITF M25 Kiseljak | 2021/05/26 09:00 | Micov, Stefan v Barun, Bozo | 4-6,1-6 |
| ITF M25 Kiseljak | 2021/05/25 08:00 | Barun, Bozo v Zivotic, Goran | 6-0,6-0 |