#3 CM Punk And Triple H
By 2014, CM Punk already grew unhappy with his time in WWE. He always wanted to main event WrestleMania, but the company had other plans for him instead. Triple H needed someone to face at WrestleMania XXX, so Punk was chosen to face The Game.
The Straight Edge Superstar, however, refused to work with the WWE COO. In all of their past matches, The Game always came out with the win, so it made no sense for Punk to face and possibly lose at WrestleMania to a man who's career was coming to an end soon.
Triple H was not thrilled that Punk refused to work with him. The latter chose to walk out of the company rather than accepting the match. \
CM Punk was fired by WWE the very same year and he went on to retire from professional wrestling.