Linebacker Austin Box could miss Oklahoma's season opener against Chattanooga after having surgery to repair torn cartilage in his left knee.
Sooners coach Bob Stoops says Box had arthroscopic surgery Tuesday and would be "doubtful" for the season opener Aug. 30.
Stoops says Box is "probable" for the Sooners' game against Cincinnati the following week.
Box redshirted last season but was considered a likely starter this year after linebacker Curtis Lofton left early for the NFL and Lewis Baker graduated.
-- The Associated Press