This was reported by the press service of the Boston Celtics, in which Westfall won his only NBA title.

In 2020, Westfall was diagnosed with brain cancer.

He has also played for the Phoenix Suns, Seattle Supersonics and New York Knicks as a player, and has served as a coach for the Suns, Supersonics and Sacramento Kings.

He has competed in the NBA All-Star Game five times and has been named Team West Head Coach twice.

Westfall was inducted into the Naismith Basketball Hall of Fame in 2019.

Earlier it was reported that eight-time NBA champion KC Jones died at the age of 88.