Utah is the best of the BCS busters.

Brian Johnson threw for 336 yards and three touchdowns, and the No. 7 Utes upset fourth-ranked Alabama 31-17 in the Sugar Bowl on Friday night to finish 13-0.

With the victory, Utah became the first team from a non-BCS conference to win two BCS bowls.

Johnson’s pinpoint passing led Utah to a 21-0 first-quarter lead and the Utes refused to wilt when Alabama pulled to 21-17 early in the second half.

Utah’s defense was equally impressive, intercepting John Parker Wilson twice and sacking him eight times, with the seventh sack forcing a fumble that sent crimson-clad Alabama fans streaming for the exits with just more than five minutes to go.

After surging to No. 1 in the rankings with a 12-0 regular season, Alabama closed the season with two consecutive losses, the first against Florida in the Southeastern Conference championship game.