The AP reports: Who needs Tracy McGrady? Seldom-used reserve Luther Head scored 21 points in place of the injured All-Star and the Houston Rockets used balanced scoring to beat the San Antonio Spurs 103-84 on Saturday night. Ron Artest added 16 points and eight rebounds, Yao Ming and Rafer Alston scored 12 points apiece, and Luis Scola added 11 for Houston, which had all five starters in double-figures for just the second time this season. Alston also had six assists, and reserve Shane Battier scored 15 points. The Rockets finished with 22 assists… Tim Duncan shook off a bad start to score 17 points for the Spurs, who had held their last 11 opponents under 100 points. Tony Parker had 15 points and seven assists in his second game and first start since missing nine games with a sprained ankle.