Arn Tellem: David loved to argue, to squabble, to scream, but he was always willing to hear me out. Rather than splitting us apart, the quarreling brought us together. As sarcastic and confrontational as David often was, he was always fair and had a stubborn integrity. I’ve never known anyone more devoted to the NBA, its mission and its players. Over the last three decades, David touched thousands of players’ lives — not in a superficial way, but in an enduring one.