High-powered USC finished with 10 first downs and eight punts as Georgia Tech shut down the Trojans' big-play threats all afternoon.
USC receiver Marqise Lee, who finished fourth in this year's Heisman voting, was held to six catches for 41 yards.
"To go out and perform the way we did today was a great feeling," said Yellow Jackets cornerback Rod Sweeting, who had an interception and was the game's MVP.
Wittek had four passes deflected at the line. His second interception came in the Tech end zone with 6:22 to go and the last came inside the Tech 10-yard line in the game's final minute. He was 14 for 37 for 107 yards.
"It was definitely our best game of the year (defensively)," said Johnson, whose team finished the regular season 6-7 after losing the ACC title game and needed an NCAA waiver to be eligible for bowl play.
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