Lamar Odom is on the Lakers’ active roster tonight for Game 5 against the Houston Rockets. Odom underwent treatment on his bruised back before the game and was not available for immediate comment. Coach Phil Jackson said he would start Odom if he was fit enough to play. But when he spoke with reporters 75 minutes before the opening tip, Jackson was unsure whether Odom could play. Odom was hurt when he fell after colliding with Shane Battier of the Rockets midway through the third quarter of Game 4 on Sunday.