Rockets center Nene on Tuesday missed a second-consecutive game with a sprained right foot with Rockets coach Mike D'Antoni unsure about whether Nene will return Thursday for the start of a brief road trip to Phoenix and Memphis. Nene's absence moved Tarik Black into the rotation, offering an early-season look at why the Rockets considered him an important off-season addition as a third center. In his fourth season, Black is a more seasoned defensive player, making his understanding and abilities in the Rockets' schemes a strength that does not get rusty when Nene and Clint Capela man the center position.