Watts, who had a stroke in 2021, had been in poor health since. Grandson Isaiah Watts, who plays for Washington State, praised his grandfather on X: “I pray every time they see

Donald "Slick" Watts died on Saturday, March 15. The Seattle Supersonics fixture was 73. Here's what we know about his cause of death.

In his later years Watts taught physical education in the Seattle School District and ran a basketball academy with his son. He was named to the Sonics' 40th anniversary team.