The AP reports: Trevor Ariza scored nine points in his Rockets debut, helping Houston beat the San Antonio Spurs 99-85 on Tuesday night in the preseason opener for both teams. Carl Landry had 19 points to lead the Rockets, who are beginning the season without the cornerstones of their team. Yao Ming is out for the season after his broken left foot was slow healing, and Tracy McGrady is recovering from microfracture surgery on his left knee, and is not expect back until midseason… Rookie Chase Budinger had 15 points, Luis Scola 13 and Aaron Brooks 12 as the Rockets looked to the young players to step up.