Claim: After retiring as a player, Pennock (regarded as one of the greatest left-handed pitchers in baseball history) served as a coach and farm system director for the Red Sox, and as general manager of the Philadelphia Phillies.
Evidence: Pennock was regarded as one of the greatest left-handed pitchers in baseball history. After retiring as a player, Pennock served as a coach and farm system director for the Red Sox, and as general manager of the Philadelphia Phillies.