"I worked all summer in the low post. When I play that pick-and-roll and they switch me, I need to be available to play in the low post against small guys. I was really working on getting stronger down there so I can finish," he said. "But we're going to play fast. There's no more like holding the ball, playing isolation. Now it's more free, like when we used to play with Rajon (Rondo) on that second unit."