Jonathan Robert Papelbon (/ˈpæpəlbɒn/; born November 23, 1980) is an American former professional baseball relief pitcher. He played 12 seasons in Major League Baseball (MLB), most notably for the Boston Red Sox, with whom he was an All-Star in four consecutive seasons (from 2006 to 2009), won the 2007 Delivery Man Award, and was a 2007 World Series champion. Papelbon also played for Philadelphia Phillies from 2012 to 2015, and the Washington Nationals from 2015 to 2016. He wore uniform number 58 throughout his career.
After moving from Baton Rouge, Louisiana, Papelbon attended high school in Jacksonville, Florida, where he played at Bishop Kenny High School and earned All-City accolades prior to attending Mississippi State to play college baseball. Subsequently, in 2003, the Boston Red Sox drafted him in the 4th round of the 2003 Major League Baseball Draft, and he played three seasons of minor league baseball before breaking into the majors. His effectiveness as a pitcher used to center on above-average velocity and deceptive breaking balls that fooled hitters.