Steven Adams, pictured against Golden State in the Western Conference finals in May, limped off late in the second quarter against Real Madrid on Monday. Photo by Nate Billings, The Oklahoman

Thunder center Steven Adams left the Thunder's 142-137 preseason loss against Real Madrid in the second quarter Monday with what the team is calling a right ankle sprain.

Adams looked to roll his ankle when he landed on another player's foot after scoring on an 11-foot floater for the Thunder. Adams limped down the court as the play was stopped and was immediately subbed out for Kyle Singler with 3:11 remaining in the period.

Adams was visibly frustrated as he went to the sideline, mouthing words to himself, then walked straight back to the locker room with Thunder trainer Joe Sharpe. Adams exited with seven points in nine minutes.