Oklahoma cornerback Zack Sanchez left the first quarter of Saturday's game against Texas Tech with a right leg injury.
Sanchez, an All-Big 12 selection last year, was carted off. He returned to the sideline later in the quarter with an air cast.
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The junior has 11 career interceptions. He picked off two passes last week against Kansas State and returned one for a score in a 55-0 win.