Ralph Treuel

Ralph Martin Treuel (born June 7, 1955, at Elyria, Ohio) is an American professional baseball coach and a former minor league baseball pitcher. Since 2006 he has been the minor league pitching coordinator for the Boston Red Sox of Major League Baseball.
Treuel has spent his 43-year professional baseball career with two Major League organizations, the Detroit Tigers and the Red Sox. After attending Lorain County Community College, he signed with Detroit in 1974 and pitched for nine seasons in the Tiger farm system, including service with the Triple-A Evansville Triplets in 1978–80. He compiled a 53–43 won–loss mark with a 4.11 earned run average in 193 minor league games. In between, he pitched for the Leones del Caracas champion team of the Venezuelan Winter League during the 1979–80 season, and made a start in the 1980 Caribbean Series.
In 1983 Treuel became the pitching coach for the Rookie-Level Bristol Tigers of the Appalachian League. In later assignments, he served as Detroit's roving minor league pitching instructor (1985–90), pitching coach of the Triple-A Toledo Mud Hens (1991–92) and field coordinator of player development (1993–94). In 1995, Treuel was Sparky Anderson's pitching coach with the MLB Tigers, but left the Detroit organization following that campaign.
In 1996, he joined the Red Sox as pitching coach of the Double-A Trenton Thunder, and was promoted to his first term as minor league pitching coordinator in 1999–2001. From September 2001 through spring training of 2002, he was the Major League pitching coach of the Red Sox, but he was reassigned in favor of Tony Cloninger when Grady Little replaced Joe Kerrigan as manager on the eve of the 2002 season. In 2003–05, Treuel served as manager of the Rookie-level Gulf Coast Red Sox, then began his second term as Boston's roving minor league pitching coordinator in 2006. However, Treuel interrupted that assignment on an emergency basis to work as the Red Sox' MLB bullpen coach for four months of the 2006 season when surgery sidelined pitching coach Dave Wallace until August 8.
Treuel was inducted into the Elyria Sports Hall of Fame in 1990.