McCoy threw for 244 yards for the Longhorns, (3-2, 2-0), who will head into next week’s game against Oklahoma with at least a share of first place in the Big 12.
McCoy led Texas on the winning 75-yard drive in just under 3 minutes.
The drive was aided by two pass-interference penalties.
ALABAMA: Assistant strength and conditioning coach Corey Harris has been placed on administrative leave after the school learned he provided impermissible benefits to safety Ha Ha Clinton-Dix, according to The Tuscaloosa News.
Clinton-Dix, who was suspended indefinitely by coach Nick Saban for a violation of team rules Wednesday, was provided a loan of less than $500 from Harris during the summer, which he repaid before the start of football season.
SOUTH CAROLINA: All-American defensive end Jadeveon Clowney did not practice Thursday because of bruised ribs, but is expected to play against Kentucky on Saturday night.
Gamecocks defensive coordinator Lorenzo Ward says Clowney was held out of drills because of the ribs.