Don Nelson, a five-time NBA champion as a player with the Boston Celtics who went on to become the second-winningest coach in league history, died on Sunday at the age of 86. His family announced the news in a statement, and his death was also confirmed by the Golden State Warriors, one of the four franchises he coached.
"On Sunday morning our beloved husband, dad, grandfather and great-grandfather Don Nelson peacefully went to be with the Lord, surrounded by his loving family," the family said in a statement shared via sports journalist Marc Stein. "Throughout his last week, friends and family encircled him with love, sharing the blessing of his friendship and revisiting treasured memories." A cause of death was not released.
A Championship Career in Boston
Nelson played 11 of his 14 NBA seasons with the Celtics after signing with the franchise in 1965, winning the first of five championships in his debut season with the team. He was part of Celtics title teams in 1966, 1968, 1969, 1974, and 1976, playing under four different head coaches, including the legendary Red Auerbach. Over his career, Nelson scored 10,898 points, grabbed 5,192 rebounds, and recorded 1,526 assists as a small forward. Boston retired his No. 19 jersey, and his standout collegiate career at Iowa earned him third-team All-American honors in 1962 before he was picked in the third round by the Chicago Zephyrs, the franchise now known as the Washington Wizards.
Revolutionizing the Coaching Game
After retiring as a player in 1976, Nelson transitioned into coaching, first as a Milwaukee Bucks assistant before taking over as head coach that same season. He went on to coach the Bucks, Golden State Warriors, New York Knicks, and Dallas Mavericks across 31 seasons, finishing with a 1,335-1,063 record — the second-most wins in NBA history. He was named NBA Coach of the Year three times, in 1983, 1985, and 1992, and led his teams to the playoffs 18 times, though he never won a championship as a head coach.
Nelson is credited as the innovator of what's now known as small-ball offense, an up-tempo, position-flexible style commonly referred to as "Nellie Ball" that has influenced modern basketball at every level. He also introduced the concept of the point forward. Nelson said the inspiration for his fast-paced approach traced back to his playing days under Auerbach in Boston. His system was on full display during Golden State's "Run TMC" era, when he built lineups around future Hall of Famers Tim Hardaway, Mitch Richmond, and Chris Mullin.
A Career of Highs and Setbacks
Nelson's coaching tenure included standout moments, such as a 1977-78 Bucks game in which Milwaukee overcame a 29-point fourth-quarter deficit to beat Atlanta in regulation, and seven straight division titles with the Bucks. He also faced difficult stretches, including a rift with rookie star Chris Webber during his first Golden State tenure that led to Webber's trade and Nelson's resignation under pressure in February 1995, a brief and unsuccessful run with the Knicks in 1995-96, and missing 21 games during his time in Dallas while recovering from prostate cancer surgery. He is one of only two coaches in NBA history to record at least 250 wins with three different franchises — Milwaukee, Dallas, and Golden State — and served as general manager for all three.
Hall of Fame Recognition
Nelson was enshrined in the Naismith Memorial Basketball Hall of Fame in 2012. As part of the NBA's 50th-anniversary celebration in 1996, he was named one of the league's top 10 coaches of all time — the only member of that list who never won a championship as a head coach. In 2025, he received the Chuck Daly Lifetime Achievement Award, honoring a career spent shaping the modern game.
Tributes Pour In
Tributes came from across the basketball world following the announcement. The Golden State Warriors called him one of the most innovative and influential coaches in NBA history, while the Dallas Mavericks organization honored him as a franchise legend and basketball innovator whose impact will not be forgotten. NBA Commissioner Adam Silver also issued a statement honoring Nelson's legacy as a Hall of Famer. For the league's full statement and additional coverage, see NBA.com.
Nelson's influence on basketball extends well beyond his win total — his small-ball philosophy reshaped how teams across the NBA build and deploy lineups today, a legacy that will continue to define the modern game long after his passing.