If he had stayed in Boston, maybe he'd be more beloved. However, he went to Philly where everyone hated him. He developed a s***** attitude. He brought his s***** attitude to DC and tried to choke out one of the most popular players in the game.
http://www.boston.com/sports/extra-bases/2015/04/09/jonathan_papelbon_disses_philly_says_red_sox_run_d