LAS VEGAS, Nevada -- It's not as if new Cavaliers guard Jarrett Jack needs a job reference, but if he did, Golden State coach Mark Jackson is willing to provide one. Asked his reaction to losing Jack to free agency, Jackson said, "It was torture because he's an incredible, incredible…forget about basketball. He's a great leader, loves the game, no nonsense. He had a great year for us. For me, he was a joy to coach, an absolute joy to coach, and I'll have a relationship with him for the rest of our lives.''