| Champions League | 2020/12/12 16:40 | Omar Assar v Anton Kallberg | W | 2-3 |
| Dusseldorf Masters | 2020/07/25 08:00 | Anton Kallberg v Omar Assar | W | 4-1 |
| Champions League | 2023/10/25 17:25 | Anton Kallberg v Jiri Martinko | W | 3-0 |
| European Champions League | 2023/10/23 16:00 | Diogo Carvalho v Anton Kallberg | W | 0-3 |
| WTT Contender Antalya | 2023/10/21 14:40 | Felix Lebrun v Anton Kallberg | L | 3-1 |
| WTT Contender Antalya | 2023/10/21 07:30 | Truls Moregard v Anton Kallberg | W | 0-3 |
| WTT Contender Antalya | 2023/10/20 11:00 | Joao Geraldo v Anton Kallberg | W | 2-3 |
| WTT Contender Antalya | 2023/10/19 15:20 | Benedikt Duda v Anton Kallberg | W | 1-3 |
| WTT Contender Muscat | 2023/10/13 15:35 | Anton Kallberg v Liam Pitchford | L | 1-3 |
| WTT Contender Muscat | 2023/10/13 06:45 | Tomokazu Harimoto v Anton Kallberg | W | 2-3 |
| WTT Contender Antalya | 2023/10/19 08:50 | Omar Assar v Tomislav Pucar | L | 1-3 |
| WTT Contender Almaty | 2023/08/31 08:00 | Omar Assar v Benedikt Duda | L | 1-3 |
| WTT Star Contender Ljubljana | 2023/07/06 14:30 | Felix Lebrun v Omar Assar | L | 3-0 |
| WTT Contender Zagreb | 2023/06/29 16:30 | Omar Assar v Kirill Gerassimenko | L | 1-3 |
| ITTF World Championships | 2023/05/26 12:55 | Zhendong Fan v Omar Assar | L | 4-0 |
| ITTF World Championships | 2023/05/25 16:30 | Tomislav Pucar v Omar Assar | W | 0-4 |
| ITTF World Championships | 2023/05/24 11:15 | Omar Assar v Truls Moregard | W | 4-2 |
| ITTF World Championships | 2023/05/23 13:45 | Omar Assar v Kirill Gerassimenko | W | 4-2 |