I don't think it'd make a difference. Rondo is a tough match up for Billups, and even though Douglas isn't as good a player as him, he can hit the three as well or better than Chauncey, and probably has a better chance of staying with Rondo. But he can't either. We won game 1 with Chauncey playing, would game 2 be different? Probably not. If Billups had played even at 100%, Melo was hot--with Billups on the floor along with him and Amare, you'd have to take the ball out of Melo's hands for Billups to make a difference. Melo was the whole reason they were really in the game. As for game 3, forget it--not too many teams will beat the C's when they shoot that well and execute on both ends.