Mark Brunell outplayed highly touted Todd Marinovich, Greg Lewis ran for 126 yards and Eric Briscoe intercepted two passes in 21st-ranked Washington's 31-0 rout of fifth-ranked Southern California yesterday in 92-degree heat in Seattle.

The Trojans had been 19-0-1 in Pacific-10 games since a 1987 midseason loss at Oregon. The Huskies intercepted three passes and the Trojans were called for 13 penalties for 111 yards; twice roughing punter Channing Wyles.

Washington (3-0) led by 24-0 at halftime in sticking USC (2-1) with its first shutout loss since 1985.

Brunell, a sophomore starting his third game, completed 12 of 23 passes for 197 yards and one touchdown, with one interception. He ran for 38 yards on eight carries.

Washington held USC to 28 yards rushing and 163 overall. Ricky Ervins was held to five yards on nine carries.

Marinovich, who helped the Trojans to a 9-2-1 record last season, was replaced by Shane Foley in the fourth quarter.

Long Beach St. 28, Pacific 7: Kelly Studer threw for 296 yards and three touchdowns in Long Beach, Calif., to give former Redskins coach George Allen, 72, his first collegiate victory since 1956.

Long Beach, which had 10 turnovers in its first three games, committed only one turnover.

The 49ers (1-3, 1-1 in the Big West Conference) had been outscored by 124-33 in their first three games, including a 59-0 loss at Clemson in their opener. Pacific fell to 1-3, 0-2.

Wyoming 24, Air Force 12: Tom Corontzos passed for 200 yards and two touchdowns in Laramie, Wyo.

Wyoming (4-0, 1-0 in the WAC) stalled time and again in the second half and led by only 17-12 late in the game. Air Force is 2-2, 1-2.

Stanford 37, Oregon State 3: Jason Palumbis completed his first 11 passes, Glyn Milburn and Tommy Vardell led a 296-yard ground game in Palo Alto, Calif. The Beavers are 0-4, 0-1 in the Pac-10.

BYU 62, San Diego State 34: In Provo, Utah, Ty Detmer threw for 514 yards and connected with Andy Boyce on three touchdown passes to lead No. 4 Brigham Young.

Detmer completed 26 of 38 passes in a duel of WAC passing artists. San Diego State's 6-foot-8 Dan McGwire, brother of Oakland Athletics slugger Mark McGwire, threw for 361 yards and three touchdowns. He completed 32 of 59 passes, the latter a record for Cougar Stadium.

Colorado State 38, UTEP 20: Brian Copeland led the WAC victory in Fort Collins, Colo., running for 142 yards and a touchdown and setting up another score with a 55-yard run.

The Rams (3-1 overall and 2-0 in WAC play) spotted UTEP a 13-0 lead barely three minutes into the game, then rallied for touchdowns on four straight possessions. UTEP is 1-3 and 0-2.

Washington State 41, California 31: In Pullman, Wash., Brad Gossen threw for two touchdowns and rushed for another to lead the Cougars' victory.

The Cougars (2-2, 1-0 in the Pac-10) used sophomore running back Shaumbe Wright-Fair to pick apart California (1-2, 0-1). Wright-Fair rushed 134 yards on 26 carries and scored a one-yard touchdown.

Gossen hit wide receiver C.J. Davis and tight end Clarence Williams for touchdown passes of 21 yards and two yards, then scrambled 17 yards for another.

Idaho 37, Weber State 27: Devon Pearce rushed for three touchdowns and 173 yards in the 1,000-yard-plus Big Sky game in Moscow, Idaho. Weber State's Jamie Martin completed 23 of 32 passes for 302 yards and Idaho's Doug Nussmeier completed 21 of 31 for 280 yards.