I actually think Vassell is late BECAUSE Keldon is late on that play Vassell can't go too early without giving up the skip pass. So he has to wait until the pass is made, but because Keldon is slow, Vassell can't move up so that he doesn't have to start from as far back. He also can't cheat up early, because he'd be above the line of ball and man and basically give up a back-door layup. If Keldon were closer, I think Vassell would've felt comfortable passing his man off a second earlier, which probably makes a completely clean rotation. I noticed that play too, both during the game and during that mistakes video. There was very little reason for Keldon to hesitate there. As soon as Davis picks up his dribble, Johnson is supposed to sprint to the corner. Wemby has to be able to contest anything AD can do from a set position without help. Johnson also jumped to try to disrupt the pass, which is a type of gamble the Spurs wings do way too often. That just slowed him down more. In reality, Johnson shouldn't've even been there by the time the pass was made, but he certainly shouldn't be jumping like that. That other Spurs do the same thing worries me that it might be a coaching decision rather than just a mistake.