CHAPEL HILL, N.C. (AP) Ryan Willis and Virginia Tech's offense struggled to sustain drives much of Saturday night at North Carolina, while the Hokies' traditionally tough defense kept surrendering big chunks of yardage.

And yet, the Hokies hung in - then pounced when they got a chance to snatch the game away.

Willis threw the go-ahead 1-yard touchdown to Dalton Keene with 19 seconds to help Virginia Tech beat UNC 22-19, capping a game-defining final 6 1/2 minutes that kept the Hokies unbeaten in the Atlantic Coast Conference.