Referee's and judges...
If you need a judge, they are, by definition, an integral part of the given 'sport'.
That makes gymnastics and ice skating and boxing suck.
Judged sports need a complete change or we will forever watch outstanding athletes have unbelievable performances trashed by the vagarities of human nature.
I say set them bars up, side by side and have two people do the SAME routine, at the same time. Get them announcers to expalin, in detail, exactly what they are suppossed to be performing.
Then you have a win, loss or tie.
Everybody builds a record through prelims and then rank 'em for the finals, worst v's 1st and you'll end up with the best two last, head to head.
Ice skating, cut the ice in half, same thing. COMPETITION not a damn dog show.
Boxing should be ended.