| WTT Contender Lasko | 2021/11/05 16:00 | Deni Kozul v Jingkun Liang | L | 0-3 |
| WTT Contender Lasko | 2021/11/04 14:25 | Deni Kozul v Takuya Jin | W | 3-0 |
| Olimpiada 2020 - Mężczyźni - Drużynowo 2020 | 2021/08/01 02:30 | Deni Kozul v Woojin Jang | L | 1-3 |
| Mistrzostwa Europy | 2021/06/22 11:20 | Deni Kozul v Lev Katsman | L | 0-3 |
| WTT Star Contender Doha | 2021/03/06 17:00 | Deni Kozul v Tristan Flore | W | 3-2 |
| Challenger Ochsenhausen | 2020/11/20 13:50 | Dauud Cheaib v Deni Kozul | W | 2-3 |
| Challenger Ochsenhausen | 2020/11/20 13:05 | Deni Kozul v Evgueni Chtchetinine | W | 3-2 |
| Challenger Ochsenhausen | 2020/11/20 09:30 | Deni Kozul v Liang Qiu | W | 3-1 |
| WTT Contender Lasko | 2021/11/02 11:30 | Aljaz Godec v Andrei Putuntica | L | 0-3 |