A cause of death was not revealed for the Mount Vernon, N.Y. native.
Williams was a two-time NBA All-Star and earned an All-NBA First Team selection in 1982.
He returned for the 1981-82 season and averaged a career-high 23.4 points per game, en route to being named the NBA Comeback Player of the Year.
Former NBA point guard Gus Williams, who helped bring the only championship to the SuperSonics in 1979, died Wednesday at the age of 71, according to the Seattle Times.
Williams, who earned the nickname “Wizard” for his scoring and speed, was living in a care facility in Baltimore at the time of his death following a stroke he suffered in February 2020.
Williams made waves when he sat out the entire next season due to a contract dispute with Seattle.