Of all the things that have changed for Washington State in the past few weeks none can match the transformation of the Cougars offense.This is still home of the Air Raid offense with Luke Falk at the helm. But its the ground attack thats been the dominant component over the past two weeks.What in the name of Mike Leach is going on here?Im a big fan of balance, Washington State wide receiver Gabe Marks said. At this point in my career I realize what it can do for you. I like it.The Cougars look to continue that newfound balance on Saturday night hosting UCLA. Washington State (3-2, 2-0 Pac-12) is looking for a fourth straight winBehind the three-pronged attack of Jamal Morrow, Gerard Wicks and James Williams, the Cougars have rushed for more than 100 yards as a team in three straight games. And while the three games of ground success represent a small sample size, its the competition it came against that helps validate the evolving offense.Washington State rushed for 228 yards against Idaho, followed up with 280 yards rushing against Oregon and had 101 yards on the ground in last weeks 42-16 rout of Stanford.You have to be able to run the ball a little bit when you want to throw it. You have to be able to make people respect the run in order to open things up in the pass game, UCLA coach Jim Mora said. It doesnt surprise us. They count the box and if a run is there, Falk is a smart guy and he executes a run. But they do like to throw it. We do know they like to throw it.UCLAs biggest question mark is whether quarterback Josh Rosen will be able to play after getting beat up in last weeks loss to Arizona State. Mora was evasive about Rosens status, his most declarative statement being if Rosen is able to play, he will, and if he isnt, he wont.Despite suffering leg and shoulder injuries against the Sun Devils, Rosen threw for a career-high 400 yards in the loss. But his performance was offset by the Bruins (3-3, 1-2) rushing for minus-1 net yards and committing four turnovers.If Rosen cant go, the Bruins would likely turn to senior Mike Fafaul.Big fork in the road for us right now. It can go one of two ways, UCLA center Scott Quessenberry said. We can start turning on each other as a team or we can really come together and start rattling off wins.Other things to watch as the Bruins visit the Cougars for the first time since 2012:RUNNING BRUINS: Its hard to imagine Washington State having