| Europaspelen | 2023/06/24 16:00 | Andrej Gacina v Deni Kozul | L | 4-2 |
| WTT Contender - Lagos - Kval | 2023/06/13 11:45 | Deni Kozul v Wang-Wei Peng | L | 2-3 |
| ITTF World Championships | 2023/05/22 16:30 | Yukiya Uda v Deni Kozul | L | 4-1 |
| ITTF World Championships | 2023/05/21 17:30 | Deni Kozul v Mizuki Oikawa | W | 4-3 |
| WTT Feeder Dusseldorf II | 2023/02/22 16:15 | Deni Kozul v Paul Drinkhall | L | 2-3 |
| WTT Feeder Dusseldorf II | 2023/02/22 12:30 | Deni Kozul v Guodong Liang | W | 3-2 |
| WTT Feeder - Düsseldorf | 2023/02/16 17:20 | Cedric Meissner v Deni Kozul | L | 3-0 |
| WTT Feeder - Düsseldorf | 2023/02/16 12:45 | Deni Kozul v Niagol Stoyanov | W | 3-0 |
| WTT Contender - Lagos | 2023/06/15 11:55 | Lubomir Pistej v Harmeet Desai | L | 1-3 |
| ITTF World Championships | 2023/05/24 16:30 | Lubomir Pistej v Jonghoon Lim | L | 2-4 |
| ITTF World Championships | 2023/05/22 17:20 | Benedek Olah v Lubomir Pistej | W | 1-4 |
| ITTF World Championships | 2023/05/20 08:40 | Jaehyun An v Lubomir Pistej | W | 1-4 |
| WTT Singapore Smash Quals | 2023/03/07 04:30 | Enzo Angles v Lubomir Pistej | L | 3-1 |
| WTT Feeder Dusseldorf II | 2023/02/22 16:50 | Lubomir Pistej v Adrien Rassenfosse | L | 1-3 |
| WTT Contender - Amman - Kval 2023 | 2023/02/06 15:10 | Tingyu Wang v Lubomir Pistej | L | 3-1 |
| WTT Feeder Amman | 2023/02/04 08:00 | Shidong Lin v Lubomir Pistej | L | 3-0 |