Don Cooper Obituary, Death – Former White Sox Pitching Coach Dies at 70

Don Cooper, the longtime Chicago White Sox pitching coach and a member of the club’s 2005 World Series championship team, died on September 22, 2026, at the age of 70.

Cooper died at his home in Brentwood, Tennessee, according to his family. The Chicago White Sox also confirmed his passing. His family described his life as being shaped by a deep passion for baseball and an enduring love for his family and friends. A cause of death has not been publicly disclosed.

Longtime White Sox Career

Cooper spent 33 seasons with the White Sox organization from 1988 through 2020. He became the club’s major-league pitching coach in July 2002 and held the position for 18 full seasons.

His career reached one of its defining moments in 2005, when he helped guide the White Sox pitching staff during their historic postseason run. Chicago won 11 of 12 postseason games and captured its first World Series championship since 1917.

During the American League Championship Series against the Los Angeles Angels, Mark Buehrle, Jon Garland, Freddy Garcia and Jose Contreras each completed a game in four consecutive contests, a postseason pitching accomplishment that had not been achieved since the 1928 New York Yankees.

Cooper also worked with numerous prominent White Sox pitchers during his lengthy tenure, including Mark Buehrle and Chris Sale.

Remembering Don Cooper

Following news of his death, former players, coaches and members of the White Sox organization shared tributes to Cooper and reflected on his influence throughout his decades in baseball.

Former White Sox manager Ozzie Guillen, who led the 2005 championship team, credited Cooper with playing an important role in his career and remembered their longtime friendship. The White Sox organization also honored Cooper’s 33 years of service and his contribution to the championship team.

Cooper leaves behind a lasting connection to one of the most significant periods in White Sox history. His work with generations of pitchers and his role in the club’s 2005 championship will remain an important part of his baseball legacy.

Funeral and memorial arrangements had not been announced as of September 23, 2026.