In his third season with the Rockets, Landry received significant minutes with the absence of center Yao Ming, who sat out while recovering from an injury. On December 18, 2009, Landry lost 3 teeth in a collision with Dirk Nowitzki while attempting to force a charge in a game on the road against the Dallas Mavericks. Fragments of his teeth were injected into Dirk's elbow. He scored a career-high 31 points against the Phoenix Suns on January 6. In the 52 games in which he appeared in for the Rockets on the season, he averaged 16.1 points and 5.5 rebounds while shooting .839 percent from the line.