The United States has, for the most part, coasted through the competition in men's basketball at the 2012 Olympic Games in London, but suffered their first setback when Russell Westbrook left the court in Team USA's win over Argentina on Friday:

Thunder's Russell Westbrook came down awkwardly in the lane, came limping, went immediately to locker room.

— David Aldridge (@daldridgetnt) August 10, 2012

Westbrook had nine points in just seven minutes off the bench in the 109-83 win, with the apparent injury coming with under four minutes left in the game, as the U.S. enjoyed a 98-72 lead. He did not return to the game, and headed into the locker room immediately, with assistance.

There's no official word on Westbrook yet, but the win did set up a gold medal match between the United States and Spain, who beat Russia on Friday to qualify for the finals.

For the latest on the 2012 Olympics, check out SB Nation's dedicated Olympics hub.