David Stern, who spent 30 years as the NBA's commissioner and oversaw its growth into a global power, has died. He was 77. The league says Stern died Wednesday after suffering a brain hemorrhage Dec. 12. Stern had been involved with the NBA for nearly two decades before becoming commissioner in 1984. By the time he left in 2014, a league that had struggled for a foothold had grown into a more than $5 billion a year industry and become perhaps the world's most popular sport after soccer.