Cal's four losses this season have come to teams that are a combined 19-3. The Bears forced six turnovers against UCLA, including three interceptions.
"It was great to have some success and see the joy and fun that goes into a win," Cal coach Jeff Tedford said. "But also understanding that it can't be a one-night stand."
The Cal defense will face a Washington State passing offense that ranks third in the Pac-12 at 312 yards per game.
"They throw it a lot. Seventy percent pass, 30 percent run," Tedford said. "They lead with the pass without a doubt."
Defensively, the Cougars' nine interceptions and 19 sacks each rank third in the league.
"They're relentless getting after the passer," Tedford said.
Cal features a balanced offense.
C.J. Anderson had a career game against the Bruins, notching career highs with 21 rushes for 151 yards. Anderson's 386 yards lead the Golden Bears on the season, but Isi Sofele adds 354 yards and Brendan Bigelow 218 yards.
The Bears average 174 yards rushing per game, while WSU is averaging about 40 yards rushing per game.
Cal quarterback Zach Maynard has completed 112 of 181 passes for 1,348 yards this season, with nine touchdown throws and five interceptions. Against UCLA, he completed 25 of 30 passes for 295 yards, threw for four touchdowns and rushed for another.
"We have to stay balanced, no doubt about it," Tedford said. "I thought that was a key last week."
Cal has a seven-game winning streak in the series dating to 2005.
NOTES: Saturday is Mike Leach bobblehead day at WSU, with the first 10,000 fans getting a doll ... WSU's Travis Long is tied for the national lead with 7½ sacks.