Don Cooper, the longtime Chicago White Sox pitching coach whose career became closely associated with the franchise’s historic 2005 World Series championship, has died at the age of 70.
Cooper died peacefully at his home in Brentwood, Tennessee, on Tuesday, September 22, 2026, according to a statement shared by his family. The Chicago White Sox confirmed his death Wednesday and extended condolences to his family, friends and generations of fans who knew him as one of the organization’s longest-serving coaches.
His family did not publicly disclose a cause of death.
For White Sox supporters, Cooper’s passing marks the loss of a coach whose name remains inseparable from one of the greatest pitching performances in franchise postseason history.
Who Was Don Cooper?
Donald James “Don” Cooper was born January 15, 1956, in New York City and spent decades in professional baseball as both a pitcher and coach.
Before beginning his coaching career, Cooper played parts of four Major League Baseball seasons between 1981 and 1985.
He appeared in 44 MLB games, pitching for the Minnesota Twins, Toronto Blue Jays and New York Yankees. His major-league record included one victory across 85⅓ innings.
Cooper’s playing career was relatively brief, but his transition into coaching ultimately established his lasting place in baseball.
More Than Three Decades With the Chicago White Sox
Cooper joined the White Sox organization in 1988, initially working in the minor leagues.
He spent 15 seasons in various player-development and coaching roles before being promoted to the major-league staff.
On July 22, 2002, Cooper became the White Sox pitching coach, replacing Nardi Contreras. He remained in the position through the end of the 2020 season.
In total, the White Sox credit Cooper with 33 seasons as a coach in their organization, including 18 full seasons as major-league pitching coach.
His longevity made him one of the most recognizable members of the White Sox coaching staff across several generations of players and managers.
Don Cooper Bio Data
| Bio Detail | Confirmed Information |
|---|---|
| Full Name | Donald James Cooper |
| Known As | Don Cooper / “Coop” |
| Date of Birth | January 15, 1956 |
| Place of Birth | New York City, New York |
| Age at Death | 70 |
| Date of Death | September 22, 2026 |
| Place of Death | Brentwood, Tennessee |
| Known For | Chicago White Sox pitching coach |
| White Sox Coaching Tenure | 1988–2020 |
| MLB Pitching Coach | July 2002–2020 |
| Major Achievement | 2005 World Series championship |
| Former MLB Teams as Player | Minnesota Twins, Toronto Blue Jays, New York Yankees |
| MLB Games Pitched | 44 |
| Cause of Death | Not publicly disclosed |
| Funeral Arrangements | Not yet publicly announced |
Don Cooper and the 2005 White Sox World Series Championship
Cooper’s coaching legacy is most closely connected with the 2005 Chicago White Sox, who captured the franchise’s first World Series championship since 1917.
Chicago went 11-1 during the postseason, with its pitching staff recording a 2.55 ERA.
The most remarkable stretch came during the American League Championship Series against the Los Angeles Angels.
After losing Game 1, the White Sox received four consecutive complete games from:
- Mark Buehrle
- Jon Garland
- Freddy Garcia
- Jose Contreras
The four starters went the distance in Games 2 through 5 as Chicago advanced to the World Series.
MLB has noted that the accomplishment had not been seen in the postseason since the 1928 New York Yankees and is considered particularly unlikely to be repeated in the modern era of specialized bullpens.
The White Sox then swept the Houston Astros in four games to claim the championship.
For Cooper, it became the defining achievement of a coaching career that spanned more than three decades.
Pitchers Who Worked With Don Cooper
Cooper coached numerous prominent pitchers during his years in Chicago.
Among them were Mark Buehrle, Jon Garland, Chris Sale, Jose Contreras, Freddy Garcia and Lucas Giolito. MLB credited Cooper with helping develop pitchers across multiple eras of White Sox baseball.
His tenure also coincided with several extraordinary individual pitching performances.
Buehrle threw a no-hitter against the Texas Rangers in 2007 and followed it with a perfect game against the Tampa Bay Rays in 2009.
Philip Humber threw another White Sox perfect game in 2012, while Lucas Giolito added a no-hitter against the Pittsburgh Pirates in 2020.
Those performances helped make pitching one of the defining elements of Cooper’s long coaching tenure.
Don Cooper Also Briefly Managed the White Sox
Cooper’s responsibilities extended beyond pitching on one notable occasion.
After manager Ozzie Guillen departed near the conclusion of the 2011 season, Cooper served as interim manager for the White Sox’s final two games.
He then returned to his familiar pitching-coach role and remained with Chicago for nearly another decade.
The organization ultimately parted ways with Cooper after the shortened 2020 season, ending a relationship that had begun in 1988.
At the time, then-general manager Rick Hahn publicly acknowledged Cooper’s enormous contribution to the organization over more than three decades.
Don Cooper Cause of Death
Don Cooper’s family confirmed that he died peacefully at his Brentwood, Tennessee, home on September 22.
A specific cause of death has not been publicly disclosed.
His family’s statement focused instead on Cooper’s deep passion for baseball and his commitment to the coaches and players around him, while emphasizing that his love for family and friends remained even more important to him.
Without additional information from the family, no illness or medical condition should be attributed to his death.
White Sox and Baseball Community Remember Don Cooper
The Chicago White Sox confirmed Cooper’s death on September 23 and remembered a coach who served the organization for more than three decades.
The club described him as a member of the coaching staff that delivered the 2005 World Series championship and said he would remain in their thoughts.
Former colleagues and players also began sharing tributes.
Former White Sox bench coach Joey Cora remembered Cooper as both a great coach and a great person, while 2005 World Series MVP Jermaine Dye expressed his sadness at the loss of “Coop.”
The reactions reflect the relationships Cooper formed across decades spent inside professional baseball clubhouses.
Don Cooper Funeral Arrangements
Public funeral and memorial arrangements had not yet been announced in the latest reports.
Cooper’s family said additional arrangements would be communicated once they were established.
Those wishing to attend a service or send condolences should rely on information released directly by Cooper’s family or an authorized funeral provider.
Remembering Don Cooper’s White Sox Legacy
Don Cooper’s legacy in Chicago extends far beyond his years of service.
He helped oversee a pitching staff that delivered one of the most memorable postseason runs in White Sox history, including four consecutive complete games in the 2005 ALCS and a dominant march to the World Series championship.
He also worked with pitchers from several generations, from Buehrle and Garland to Sale and Giolito.
For White Sox fans, the 2005 championship remains a defining moment — and Cooper’s fingerprints are firmly attached to the pitching staff that made it possible.
His career lasted much longer than his brief time as a major-league pitcher. Through coaching, Cooper ultimately spent more than 30 years influencing pitchers, building relationships and becoming part of the identity of Chicago White Sox baseball.
Final Update on Don Cooper’s Death
As of September 23, 2026, Don Cooper’s death at age 70 has been confirmed by his family and the Chicago White Sox.
He died peacefully at his Brentwood, Tennessee, home on September 22.
A cause of death has not been publicly disclosed, and funeral arrangements remain pending.
Cooper leaves behind a baseball legacy highlighted by 33 seasons in the White Sox organization, 18 full seasons as the club’s major-league pitching coach and a central role in Chicago’s 2005 World Series championship.
Frequently Asked Questions
Who was Don Cooper?
Don Cooper was a former MLB pitcher and longtime Chicago White Sox pitching coach who served in the organization from 1988 through 2020.
How old was Don Cooper when he died?
He was 70 years old.
When did Don Cooper die?
Cooper died on Tuesday, September 22, 2026, at his home in Brentwood, Tennessee.
What was Don Cooper’s cause of death?
His family has not publicly disclosed a cause of death.
Was Don Cooper part of the 2005 White Sox championship team?
Yes. He was Chicago’s pitching coach when the White Sox won the 2005 World Series, their first championship since 1917.
How long did Don Cooper coach for the White Sox?
The organization credits him with 33 seasons as a coach from 1988 to 2020, including 18 full seasons as major-league pitching coach.
Have Don Cooper’s funeral arrangements been announced?
No. His family said arrangements would be announced once finalized.
Disclaimer
This article is based on the Cooper family’s announcement, confirmation from the Chicago White Sox, MLB historical records and current reporting available on September 23, 2026. Don Cooper’s death at age 70 has been confirmed, but his family has not publicly disclosed a cause of death. Funeral arrangements were also pending at the time of publication.