The AP reports: Ron Artest gave Houston fans an early glimpse of what he brings to the team. Artest scored 12 of his 15 points in the first quarter of his Rockets debut, and Houston beat the Memphis Grizzlies 96-93 on Tuesday night in its preseason opener… Tracy McGrady sat out to rest his sore left knee… Carl Landry, Yao’s backup, had 18 points and nine rebounds… Rudy Gay scored 14 for the Grizzlies and had a pair of highlight-reel dunks in the fourth quarter. Hakim Warrick led Memphis with 15, including a dunk that tied it at 92.