#2: Cristiano Ronaldo and Xabi Alonso
Cristiano Ronaldo often gets a lot of stick for being selfish. This incident also occurred over a penalty. Although it didn't seem ugly, Alonso asked Ronaldo to let him take the spot-kick.
Ronaldo denied his request although he had already scored a goal in the match. But, Alonso ended up taking it in the end. Having already scored one, Cristiano was expected to give the penalty to the Spaniard but chose to be selfish on the pitch.