Football

and the refs flagged the SF corner for leading with the helmet. That was a bang-bang play that looked bad in real time, but the cameras showed beyond any doubt whatsoever:

a) there was absolutely no contact to EITHER player's helmet. It was shoulder pad to shoulder pad, which is legal; and

b) the defender had made an attempt to avoid the direct hit when he saw the pass was not caught.

I think that was the NFC game not the AFC game, but I'll admit my memory is blurred a little. My recollection was that was a real change in momentum with that blown call. I just don't see the logic in saying that certain plays can be reviewed and others can't. If the coach has three challenges, let him use them. In the NBA, the refs check the videos before assessing a Flagrant II foul. It is only fair.

I wouldn't mind seeing each team get 5 challenges. I think it adds to the drama of the game and allows the fans to better understand the intricacies of the rules, which is all good. I think the challenges in tennis matches are the best part of that game sometimes.