| 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 Pro Tennis Series Bucharest | 2021/05/30 10:00 | Ihor Dudun v Marcelo Zormann | 1-6,0-6 |
| ITF - M15 Rovinj | 2021/03/16 08:55 | Matteo Arnaldi v Zmak, Deni | 6-3,6-4 |
| ITF - M15 Rovinj | 2021/03/15 11:30 | Zmak, Deni v Rogic Hadzalic, Alen | 6-3,7-6 |
| ITF - M15 Rovinj | 2021/03/14 08:30 | Zmak, Deni v Ragazzi, Alessandro | 6-3,7-6 |
| Adriatic Tennis Series | 2020/06/16 10:00 | Petrovic, Danilo v Zmak, Deni | 6-2,6-4 |
| Adriatic Tennis Series | 2020/06/15 09:30 | Marino Jakic v Zmak, Deni | 2-6,4-5 |
| ITF - M15 Porec | 2020/03/11 09:00 | Juan Pablo Paz v Zmak, Deni | 6-2,3-6,7-6 |
| ITF - M15 Porec | 2020/03/10 09:00 | Oleksandr Ovcharenko v Zmak, Deni | 7-6,2-6,10-12 |
| ITF - M15 Porec | 2020/03/09 12:25 | Mrsic, Luka v Zmak, Deni | 1-6,2-6 |