| UTR Pro Tennis Series Zadar | 2021/07/02 08:00 | Zmak, Deni v Barun, Bozo | 6-2,6-2 |
| UTR Pro Tennis Series Zadar | 2021/07/01 14:00 | Arthus De La Bassetiere v Barun, Bozo | 7-6,6-2 |
| UTR Pro Tennis Series Zadar | 2021/06/30 12:00 | Ihor Dudun v Barun, Bozo | 1-6,1-5 |
| 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 |
| UTR Pro Tennis Series Zadar | 2021/07/02 09:30 | Goetz, Ryan v Khomich, Aleksei | 6-1,5-1 |
| UTR Pro Tennis Series Zadar | 2021/07/01 12:45 | Kiefer, Alexander v Khomich, Aleksei | 6-3,5-3 |
| UTR Pro Tennis Series Zadar | 2021/06/29 12:30 | Kajin, Karlo v Khomich, Aleksei | 6-4,3-6,2-6 |
| UTR ProTennis Series Zadar | 2021/06/28 08:00 | Khomich, Aleksei v Matija Pecotic | 1-6,2-5 |
| ITF - M15 Shymkent | 2021/05/25 07:50 | Khomich, Aleksei v Nashatyrkin, Roman | 4-6,1-6 |
| ITF - M15 Shymkent | 2021/05/24 06:35 | Khomich, Aleksei v Adil Karakayev | 6-1,6-0 |
| ITF - M15 Antalya | 2021/05/17 07:00 | Presuhn, Bastien v Khomich, Aleksei | 7-5,6-3 |
| ITF - M15 Antalya | 2021/05/16 07:00 | Svensson, Daniel v Khomich, Aleksei | 2-6,6-2,6-10 |