Basketball Hall of Famer Don Nelson was a five-time NBA champion as a player. He later became one of the most successful and influential coaches in league history. He has died at the age of 86.
According to Reuters, Nelson’s family confirmed his death on Sunday. They said the former Boston Celtics player and longtime coach died peacefully while surrounded by loved ones.
“On Sunday morning our beloved husband, dad, grandfather and great-grandfather Don Nelson peacefully went to be with the Lord,” his family said.
Nelson leaves behind a career spanning five decades and almost every side of professional basketball. He was a championship-winning player, coach, and executive. He was also one of the tactical innovators credited with influencing the modern NBA.
Five championships with Boston Celtics
Before becoming known as “Nellie” on the sidelines, Nelson enjoyed a successful 14-season playing career.
He spent 11 seasons with the Boston Celtics. He helped the franchise win five NBA championships during the 1960s and 1970s.
One of his most memorable moments came in Game 7 of the 1969 NBA Finals. His late jumper helped Boston secure another championship.
The Celtics later retired his No. 19 jersey in 1978.
But Nelson’s influence on basketball would grow even further after he stopped playing.
Nelson becomes one of NBA’s winningest coaches
Nelson moved into coaching after his retirement. He eventually spent 31 seasons in charge of the Milwaukee Bucks, Golden State Warriors, New York Knicks and Dallas Mavericks.
He finished with 1,335 regular-season victories, making him the NBA’s all-time winningest coach when he retired in 2010.
Gregg Popovich later surpassed that mark, leaving Nelson second on the league’s career wins list.
Nelson was named NBA Coach of the Year three times and reached the playoffs in 18 of his 31 seasons.
Although he never won an NBA championship as a head coach, his teams frequently challenged traditional ideas about how basketball should be played.
NBA Commissioner Adam Silver described Nelson as a transformative figure.
“Don Nelson revolutionized NBA basketball through his fearlessness, ingenuity and deep conviction,” Silver said.
He added that Nelson’s influence on the game would continue to be felt for generations.
‘Nellie Ball’ helped reshape basketball
Nelson became famous for unconventional line-ups and fast-paced offences that often relied on smaller, more versatile players.
He helped popularise the concept of the “point forward,” allowing bigger players to handle the ball and initiate offence. They did this rather than relying solely on traditional point guards.
His approach became popularly known as “Nellie Ball.”
Nelson once explained that he wanted to “play unconventional basketball and use speed” to his advantage.
Many of the ideas that once made his teams unusual have since become common across the modern NBA.
Golden State Warriors coach Steve Kerr said Nelson consistently looked at the sport differently from other coaches.
“So much of what is now commonplace in the modern NBA can be traced back to the way Nellie approached the game,” Kerr said.
From Dirk Nowitzki to Stephen Curry
Nelson also played an important role in the careers of some of basketball’s biggest stars.
During his years with Dallas, Nelson helped build the Mavericks into contenders. He was instrumental in bringing German youngster Dirk Nowitzki to the NBA.
Nowitzki eventually became the face of the franchise and an NBA Most Valuable Player. He was also the man who led Dallas to its first championship in 2011.
Nelson also coached Steve Nash before the point guard became a two-time league MVP.
Years later, during Nelson’s second spell with Golden State, another future superstar arrived.
Stephen Curry played his rookie season under Nelson in 2009-10.
“One of the big reasons I was drafted by the Warriors was because of Don Nelson,” Curry later recalled.
Curry said Nelson challenged him from his first day and gave him an opportunity to develop his game.
‘We Believe’ upset enters NBA history
One of Nelson’s most famous coaching achievements came with Golden State during the 2007 playoffs.
His eighth-seeded “We Believe” Warriors stunned the top-seeded Dallas Mavericks in the opening round.
Dallas had won 67 regular-season games and entered the playoffs as one of the championship favourites. However, Nelson’s Warriors eliminated his former team in six games.
The upset remains one of the most memorable first-round shocks in NBA history.
Golden State described Nelson following his death as “one of the most innovative and influential coaches in NBA history.”
The franchise added that he “saw the game differently and was never afraid to challenge conventional thinking.”
Hall of Fame career honoured
Nelson was inducted into the Naismith Memorial Basketball Hall of Fame in 2012 in recognition of his coaching career.
In 2025, he received the Chuck Daly Lifetime Achievement Award from the National Basketball Coaches Association for his contributions to the sport.
His death prompted tributes from across the NBA, including the Celtics, Bucks, Mavericks and Warriors.
Nelson leaves basketball with five championship rings as a player, three Coach of the Year awards and 1,335 coaching victories.
More importantly, many of the tactical ideas once considered unconventional during the “Nellie Ball” era have become part of how basketball is played today.
