I wonder if like....
...old 'TV wrestling', the referees are instructed not to see certain things to increase the interest level of the spectators. These days I would be more surprised if a sport ISN'T rigged. Boxing and martial arts sure are. I'm not saying the fighters don't do their best or take dives, but the judges come up with the decision that will help their enterprise the most. Often it's robbing a fighter so that he/they will make bigger money in a planned, emotionally charged 'revenge match', which is usually anti-climactic.
I've done sports and loved every minute but as a spectator at this point I'm almost completely devoid of giving a ****. These days when we do trivia, I let my other teammates handle the 'sprots' questions. (spelling intentional)
Now they've finally admitted that colleges and universities exist for the football teams, and academia is a secondary concern.
I have to say, though, that my career as a spectator is pretty bad. I usually root for the underdog and get the expected result. I did like Carolina basketball when Frank McGuire was coaching, tennis matches, and pro football back in the early 70's was GREAT! I got behind Clemson when they were on top, then they got caught cheating and ended that. I got behind the Braves in their world series efforts, then they fired Otis 'My Man' Nixon (who always dellivered) and Chief Noc-a-homa so I quit with them.