What about Donald's yellow?? That's a decision that shows that the TMO didn't know how to interpret a scuffle that is rather common and somehow part of the game. I don't like the TMO making this kinds of decisions that have such an impact on the game.
No excuse? Have you played? You are running full speed you see the ball near you you extend you arme to make the tackle, it was an accident that he passed out If he hadn't it would have only been a yellow.