There was a bit of good news on the Andre Drummond front Friday. The Pistons rookie said that he has been dunking for several days. Definitely a good sign when you consider he has missed 20 games and counting because of a stress fracture in his lower back. But Pistons coach Lawrence Frank said the team will remain cautious with the rookie center, who many are starting to consider the team's best player. "We're going to have to take it slow," Frank said before the Pistons' 103-89 loss at Miami on Friday. "You don't get to this level conservative with it, and then all of sudden you're going to try to go from zero to 60 (m.p.h.) too quickly. "He continues to do more. He's working very, very hard. He wants to get back on the court, but he wants to build it up." Frank ruled him out for tonight's game at Charlotte as well.