James' slam dunk over Serge Ibaka midway through the fourth quarter ended with a painful injury to the Heat superstar, who was helped off the court and into the locker room after laying on the court for several minutes.
The Thunder got 28 points from Kevin Durant.
Russell Westbrook -- returning to the lineup after missing 27 games with a knee injury -- contributed 16 for Oklahoma City.
2014: NFL Cheerleaders [PHOTOS]
Michael Sam cut from the Dallas Cowboys