Robert Franks Jr. matched his career high with 34 points and Washington State stunned Arizona State with a dominant 91-70 victory over the Sun Devils on Thursday night.

The Cougars (9-14, 2-8 Pac-12) snapped a five-game losing streak and won on the road for the first time this season.

Arizona State (15-7, 6-4) had won four of five and figured to be headed into an important game Saturday against Pac-12 leader Washington. But the Sun Devils were derailed before they ever got to the Huskies.

Franks, who scored 34 last season against California, made 11 of 16 shots, 5 of 8 3-pointers, and grabbed 13 rebounds. Marvin Cannon added 13 for Washington State.

Luguentz Dort scored 22 for Arizona State. Kimani Lawrence added 13.

The big difference came from long range. The Cougars made 12 of 29 3s, while the Sun Devils were a dismal 3 of 28.

The Cougars, whose only other conference win was at home against California, took a double-digit lead early and never were seriously threatened as Arizona State added this loss to other pratfalls against Utah, Princeton and Stanford by a Sun Devils team that expected to contend in the Pac-12.

Franks scored eight in a 15-5 run that put Washington State up 25-14 with 9:50 to play. Arizona State never got closer than seven the rest of the game.

Frank's fourth 3-pointer of the half, followed by a layup by Isaiah Wade, put Washington State up 46-30 with 3:19 left in the half. That basket, followed by two free throws by Marvin Cannon, gave the Cougars their biggest lead of the half, 50-32, with a minute left. They led 50-33 at the break.

Franks made 8 of 11 shots, including 4 of 5 3s, for 23 first-half points. He also grabbed eight rebounds.

The Sun Devils went the final 5:41 of the half without a field goal.

Washington State led by as many as 26 in the second half.

BIG PICTURE

The Cougars followed the brilliant performance of Franks to their best game of the season, a win that had to feel good after so many struggles lately. This one wasn't even close and will help Washington State as it finishes out the schedule.

Shooting is a problem for Arizona State and that weakness was on display big-time. Losing at home to one of the worst teams in the conference has to be a low point in the season for the Sun Devils as well as a big blow to any hopes of getting to the NCAA Tournament without winning the conference tourney in Las Vegas.

UP NEXT

Washington State: The Cougars play at Arizona on Saturday.

Arizona State: The Sun Devils look to bounce back against Pac-12 leader Washington on Saturday.