Don Nelson with his dog Lucky in Oakland, Calif., in 2006. Nelson, who won five NBA championship rings as a player with the Boston Celtics and went on to become an innovative and freethinking Hall of Fame head coach and one of the winningest in league history, has died. (Jim Wilson/The New York Times) By GLENN RIFKIN Don Nelson, who won five NBA championship rings as a player with the Boston Celtics and went on to become an innovative and freethinking Hall of Fame head coach and one of the…
