| WTT Feeder Dusseldorf | 2023/02/15 17:25 | Tomas Polansky v Deni Kozul | W | 0-3 |
| WTT Feeder Dusseldorf | 2023/02/15 13:05 | Yew En Koen Pang v Deni Kozul | W | 0-3 |
| WTT Contender Doha Quals | 2023/01/16 08:10 | Jaehyun An v Deni Kozul | L | 3-1 |
| WTT Contender Doha Quals | 2023/01/15 08:45 | Sajad Hosseini v Deni Kozul | W | 1-3 |
| WTT Feeder Dusseldorf | 2022/11/24 12:20 | Deni Kozul v Panagiotis Gionis | L | 0-4 |
| WTT Feeder Dusseldorf | 2022/11/23 16:45 | Alberto Mino v Deni Kozul | W | 0-4 |
| WTT Feeder Dusseldorf | 2022/11/23 12:15 | Samuel Walker v Deni Kozul | L | 3-2 |
| WTT Feeder Dusseldorf | 2022/11/22 19:35 | Jiri Martinko v Deni Kozul | W | 0-3 |
| WTT Feeder Dusseldorf | 2023/02/15 16:50 | Niagol Stoyanov v Chun Ting Wong | W | 3-1 |
| WTT Feeder Dusseldorf | 2023/02/15 13:05 | Niagol Stoyanov v Maciej Kubik | W | 3-2 |
| WTT Feeder Doha 2023 | 2023/01/24 09:20 | Haidong Xu v Niagol Stoyanov | L | 3-0 |
| WTT Contender Doha Quals | 2023/01/16 14:55 | Niagol Stoyanov v Zihao Zhao | L | 0-3 |
| WTT Contender Doha Quals | 2023/01/15 16:05 | Niagol Stoyanov v Ebrahim Gubran | W | 3-0 |
| WTT Contender Novo Gorica | 2022/11/01 10:15 | Niagol Stoyanov v Ganghyeon Park | L | 0-3 |
| WTT Contender Muscat Quals | 2022/09/06 12:45 | Niagol Stoyanov v Yebo Liu | L | 1-3 |
| WTT Feeder Panagyurishte | 2022/09/02 12:20 | Niagol Stoyanov v Andrei Istrate | L | 1-4 |