http://www.slate.com/articles/sports/sports_nut/2015/09/jonathan_papelbon_has_finally_crossed_the_rocker_line_by_attacking_bryce.html

On Sunday, the Washington Nationals’ disastrous season reached a new low when All-Star closer and noted jerk Jonathan Papelbon attacked his superstar teammate Bryce Harper in the Nationals’ dugout. The skirmish began after Papelbon became demonstrably annoyed that the 22-year-old Harper—the presumptive National League MVP—failed to run out a pop fly to the relief pitcher’s liking. Harper retorted that he would be happy to “fight [Papelbon] right now,” and Papelbon took him up on the offer. The next inning, Papelbon promptly surrendered a two-run homer.