Jonathan Robert Papelbon (/ˈpæpəlbɒn/; born November 23, 1980) is an American professional baseball relief pitcher for the Washington Nationals of Major League Baseball (MLB). He was a member of the Boston Red Sox, with whom he reached four consecutive Major League Baseball All-Star Games from 2006 to 2009, won the 2007 Major League Baseball Delivery Man Award, and was a 2007 World Series champion. He also played for the Philadelphia Phillies from 2012 to 2015. He has worn uniform number 58 throughout his career.