Clippers All-Star forward, Blake Griffin, sustained a left knee injury during Wednesday night's practice with the U.S. Olympic basketball team in Las Vegas and was scheduled to return to Los Angeles on Thursday for further evaluation.

The same doctor who performed his season-ending left knee surgery during his rookie season in 2010 will examine Blake Griffin.

Griffin had been given a clean bill of health after he took a physical Tuesday in L.A., before he signed his five-year, $95-million contract extension. Griffin is not going to play Thursday night against the Dominican Republic in Las Vegas.

It's the same knee that Griffin sprained in Game 5 of the Western Conference first-round playoff series against the Memphis Grizzlies. Griffin didn't miss a game in that series and played in the next four games in the semifinals against the San Antonio Spurs.

USA Basketball chairman, Jerry Colangelo, phoned forward Anthony Davis, the No. 1 overall pick by the New Orleans Hornets in the June draft, and asked him to rejoin the team for practice. Davis was one of the finalists to make the 12-man Olympic roster, but a sprained ankle prevented him from practicing with the team last week.

Davis remained in Las Vegas as a member of the U.S. select team that scrimmaged against the Olympic team. However, Davis was limited to a spectator as his ankle healed. There had been hope that Davis could participate in some of the Hornets' Summer League games in Las Vegas later in the week or early next week.

The Olympic team has been hit with injury after injury, forcing Colangelo to add names to the player pool and select a team different from the one anticipated in January.

Since USA Basketball announced the 20-man preliminary roster in January, five players have withdrawn because of injuries: Chauncey Billups, LaMarcus Aldridge, Dwight Howard, Dwyane Wade and Chris Bosh. Lamar Odom withdrew to concentrate on the 2012-13 season.

Davis and James Harden were added to the preliminary roster in May, with Harden already making the 12-man team.