CORVALLIS, Ore. (AP) - Jake Browning threw for three touchdowns, Myles Gaskin ran for 113 yards and a score and No. 6 Washington broke open a close game with a 21-point third quarter to beat Oregon State 42-7 on Saturday night.

Browning completed 26 of 34 passes for 293 yards and had touchdown passes of 5, 15 and 34 yards to Dante Pettis, who had 12 catches for 105 yards. Browning has now accounted for 12 touchdowns, 10 passing, in three career games against Oregon State.

Gaskin ran for a third-quarter touchdown of 32 yards, and had 15 carries in posting his second consecutive 100-plus-yard game for Washington (5-0, 2-0 Pac-12).

The Huskies finished with 509 yards after struggling to get going initially.

Washington's defense was smothering, holding Oregon State (1-4, 0-2) to 184 yards and eight first downs. The Beavers didn't cross Washington's 45 until the final six minutes.

Oregon State quarterback Darrel Garretson, making his first start of the season in place of injured Jake Luton, completed 11 of 22 passes for 74 yards.

The Huskies nearly had their first shutout against a Pac-12 opponent in eight years but Oregon State's Thomas Tyner scored on a 12-yard run with 3:23 remaining.