J.R. Smith will be back on the active roster Sunday when the Knicks return to the Garden to host the Spurs, with his five-game drug suspension complete and his surgically repaired left knee sufficiently rehabilitated enough for him to play. The shooting guard's return will change the rotation for the Knicks, but coach Mike Woodson left open the possibility that it also could alter the starting lineup. Woodson said in preseason that he would consider starting the reigning NBA Sixth Man of the Year. "Well, right now, he comes back Sunday and when he comes back, we'll just play it out," Woodson said. "We don't have a lot of practice time now between games, and games are coming so quickly at us that it's hard to practice and really determine who's going to be [the starter at shooting guard]. "It's just a matter of getting all the pieces in place and [to] start getting a really nice rotation, because we're not there yet on rotations." Asked if that meant Smith could start, he said, "Could be, he possibly could be. Absolutely."