Darron Thomas accounted for four touchdowns as Oregon blasted visiting Arizona 48-29 in a Pac-10 game Friday night to remain in the national championship picture.

The Ducks trailed 19-14 at the half, but got its powerhouse offense on track in the second half with five touchdowns to clinch the conference title.

No. 1 Oregon (11-0, 8-0 Pac-10) needs a win next week against rival Oregon State for a chance to play in its first national championship game.

Thomas threw three touchdown passes and ran for another. He finished with 150 yards passing and 62 yards on the ground as the Ducks rushed for 406 yards.

Josh Huff scored an 85-yard touchdown to give Oregon its first lead of the game 20-19 early in the third quarter. Thomas later scored on a 20-yard run to make it 27-19 with four minutes left in the quarter.

No. 20 Arizona (7-4 4-4) led 19-14 at the half. The Wildcats got two touchdown passes by Nick Foles to Juron Criner - the first one was 8 yards and the second covered 85 yards.

Oregon got a couple of touchdown passes from Thomas to tie the game at 14. Thomas hit David Paulson for a 38-yard score and Jeff Maehl from 6 yards out.

The Wildcats took a 16-14 lead on a safety when a botched snap to the punter went through the end zone. Alex Zendejas added a 29-yard field goal with seven seconds left in the half.

But Oregon dominated in the second half as LaMichael James scored on touchdown runs of 1 yard and 13 yards. James, a Heisman candidate, rushed 28 times for 126 yards.