SPOKANE, Wash. (AP) - Josh Scott scored eight of his 19 points in overtime as No. 15 Colorado held off Washington State 71-70 on Wednesday night.
Askia Booker added 18 points for Colorado (14-2, 3-0 Pac-12), which has tied the second-best start in program history.
Dexter Kernich-Drew scored a career-high 24 points to lead Washington State (7-8, 0-3), which was playing without leading scorer DaVonte Lacy, who has a rib injury.
Colorado dominated the free throw shooting, making 26 of 38, while Washington State went to the line only three times, making them all.
Washington's Que Johnson hit a 3-pointer to send the game into overtime.
Colorado got consecutive baskets from Scott, Spencer Dinwiddie and Scott again for a 62-58 lead. Johnson scored for Washington State, but Scott replied with two baskets to make it 66-60.
D.J. Shelton's long jumper cut Colorado's lead to 66-62 with 1:37 left.
Booker made two free throws for Colorado with 37 seconds left. Junior Longrus stuffed the ball for Washington State, but the Cougars were forced to foul.
Booker made two more free throws, but Shelton replied with a 3-pointer to cut it to 70-67.
Dinwiddie made one of two free throws, and Washington State's Royce Woolridge sank a 3-pointer to cut Colorado's lead to 71-70 with 1.5 seconds left.
With 0.3 on the clock, Dinwiddie missed both free throws, and a desperation heave by Shelton missed as time expired.
Washington State led 34-28 at halftime.
Colorado took its first lead of the game when Johnson made two free throws for a 53-51 lead with 4:26 left.
Xavier Talton hit a 3 to give Colorado a 56-53 lead with 1:20 left. Woolridge missed a 3 on the other end.
Colorado brought the ball down and Booker missed a jumper. Washington State rebounded with 20 seconds left and called timeout with 10.3 seconds left.
Johnson hit a 3-pointer from the left side with a couple of seconds on the clock to tie the score at 56. Booker missed at the buzzer to send the game into overtime.
Colorado is enjoying its highest poll ranking since the 1997 team also reached No. 15.
Washington State has had trouble scoring in Pac-12 play. Last week they scored only 25 in a loss at No. 1 Arizona and just 47 in a loss at Arizona State.