Don Cooper, Former Chicago White Sox Pitching Coach, Dies at 70

Known across baseball simply as Coop, Cooper spent nearly four decades inside the White Sox organization after an unremarkable playing career spanning four seasons in the majors with the Minnesota Twins, Toronto Blue Jays, and New York Yankees after signing with the Yankees in 1978. While his playing days yielded a 1-6 record across 44 appearances, his coaching legacy in Chicago completely eclipsed his time on the field.

Cooper passed away peacefully, according to a family statement shared on Facebook under his personal account. The White Sox confirmed the news publicly on September 23, noting that he spent 33 seasons in the organization from 1988 through 2020, including 18 full campaigns as the major-league pitching coach.

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Architect of the 2005 World Series Rotation

Cooper’s definitive career achievement came in October 2005, when his starting rotation put together a postseason stretch that remains unmatched in modern baseball history. During the American League Championship Series against the Anaheim Angels, White Sox starters Mark Buehrle, Jon Garland, Freddy Garcia, and Jose Contreras tossed four consecutive complete games to eliminate the Angels—a feat no team had accomplished since the 1928 New York Yankees. The bullpen was called upon for precisely zero outs during that four-game span.

One week later, the White Sox swept the Houston Astros to capture the franchise’s first World Series title since 1917. Cooper’s blunt philosophy on the game—Starting pitching will either lead you to the White House or the out house—became the guiding ethos for a pitching staff that defined an era on the South Side.

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Lasting Impact on Generations of Pitchers

Beyond the 2005 championship ring, Cooper built a reputation for reviving careers and maximizing the potential of pitchers who crossed his path. Former catcher A.J. Pierzynski noted that Cooper fixed Jose Contreras, helped turn Mark Buehrle into a borderline Hall of Famer, and extended the careers of pitchers like Brandon McCarthy, Bobby Jenks, and Jon Garland.

That development track extended into the next decade, overseeing the emergence of Chris Sale. Sale arrived in the majors as a reliever with high velocity and erratic control before Cooper molded him into one of the most dominant starting pitchers in the sport.

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A Fiery Persona on and off the Field

Cooper was equally famous for his unvarnished East Coast directness and fierce defense of his players. White Sox general manager Chris Getz recalled that Cooper’s direct personality resonated deeply within the clubhouse culture and earned the genuine adoration of players and fans alike.

Former players and colleagues shared tributes across social media following the announcement. 2005 World Series MVP Jermaine Dye posted a brief remembrance stating that Coop would be deeply missed, while former bench coach Joey Cora emphasized that Cooper’s primary motivation in life was helping people succeed both inside and outside the game.