Between 1975-1978, Warthen pitched in 83 big-league games, going 12-21 with a 4.31 ERA for the Montreal Expos, Philadelphia Phillies and Houston Astros. He broke in with Montreal and went 8-5 with three saves and a 3.11 ERA as a rookie. It would be the best year of his career as he set career-highs with 167.2 innings pitched and 128 strikeouts. Despite the promising start, Warthen struggled in 1976 and 1977 and was eventually traded to the Philadelphia Phillies in a deal that brought Tim Blackwell back to the Expos. He was no more effective in Philadelphia and was traded to Houston where he made his last appearances in the majors. He continued to pitch in the minor leagues until 1982, at which point he retired.
Following his playing career, Warthen became a coach for many teams. He was the pitching coach for the Seattle Mariners, Detroit Tigers and San Diego Padres. He became the New York Mets pitching coach in 2008 and it was with the Mets that he participated in the 2015 World Series. Warthen is currently an assistant pitching coach for the Texas Rangers.
Dan Warthen – career stats