Back in the day when I was still a WCE Supporter, I remember an umpire reporting an Eagle player for hitting his own team mate then gave the free kick to the Carlton player who was the one who actually hit the other Eagle player. The free kick indirectly resulted in a goal being scored by Carlton who eventually won the game by under a goal.
After the game the umpire withdraw the report against the Eagles player as the video replay clearly showed he made a massive mistake.
That was around the time even the AFL who normally admitts very little about anything came out and stated that umpires show bias against certain teams.
IMO that guys was the worst umpire ever.
The games should be won or lost by the actions of the players and not by bias or incompetent umpires.