CM Punk quits WWE [VIDEOS]: A look back at 'The Best in the World's' greatest WWE moments

CM Punk walked out on the WWE prior to the Jan. 27 Monday Night RAW live show likely due to the fact that he was frustrated with his place on the card, and though there is some slim hope that "The Best in the World" will return to the company come Monday's show live from his hometown of Chicago, it is likely that he may never return to the squared circle again.