Kobe Bryant and Andrew Bynum practiced with their teammates today and they expect to play in Game 1 of the Lakers’ first-round series against the Oklahoma City Thunder on Sunday. However, backup center DJ Mbenga became the third player to be injured in as many days when he suffered a possible concussion during the 2 1/2-hour workout. Sasha Vujacic sprained his left ankle Wednesday against the Clippers and might not play in the first round. Jordan Farmar strained his left hamstring Tuesday against Sacramento. It’s expected that Farmar will be fit to play Sunday.