Colorado upsets No. 2 Arizona 79-63 with strong second half

Arizona guard Bennedict Mathurin, left, goes up for a basket as Colorado forward Tristan da Silva (23) defends in the first half of an NCAA college basketball game Saturday, Feb. 26, 2022, in Boulder, Colo. (AP Photo/David Zalubowski)

Colorado forward Jabari Walker, back, hugs guard KJ Simpson after Simpson hit a basket against Arizona in the second half of an NCAA college basketball game Saturday, Feb. 26, 2022, in Boulder, Colo. (AP Photo/David Zalubowski)

Arizona forward Azuolas Tubelis, left, drives the lane as Colorado guard Luke O'Brien, center, and forward Jabari Walker, right, defend in the first half of an NCAA college basketball game Saturday, Feb. 26, 2022, in Boulder, Colo. (AP Photo/David Zalubowski)

Colorado forward Tristan da Silva, top, celebrates with teammates as time runs out in the second half of an NCAA college basketball game against Arizona, Saturday, Feb. 26, 2022, in Boulder, Colo. (AP Photo/David Zalubowski)

Colorado guard KJ Simpson, left, looks to pass the ball as Arizona forward Azuolas Tubelis defends in the second half of an NCAA college basketball game Saturday, Feb. 26, 2022, in Boulder, Colo. (AP Photo/David Zalubowski)

Colorado forward Evan Battey, center, takes a photo with fans after they rushed the floor after an NCAA college basketball game against Arizona, Saturday, Feb. 26, 2022, in Boulder, Colo. (AP Photo/David Zalubowski)

Arizona guard Bennedict Mathurin (0) checks the overhead scoreboard after being called for a foul against Colorado in the second half of an NCAA college basketball game Saturday, Feb. 26, 2022, in Boulder, Colo. (AP Photo/David Zalubowski)

Fans rush the floor after Colorado's victory over Arizona in an NCAA college basketball game Saturday, Feb. 26, 2022, in Boulder, Colo. (AP Photo/David Zalubowski)

Colorado forward Tristan da Silva, center, celebrates as fans rush the floor after an NCAA college basketball game against Arizona, Saturday, Feb. 26, 2022, in Boulder, Colo. (AP Photo/David Zalubowski)

Colorado guard KJ Simpson (2) screams after hitting a key basket as forward Jabari Walker (12) looks on in the second half of an NCAA college basketball game against Arizona, Saturday, Feb. 26, 2022, in Boulder, Colo. (AP Photo/David Zalubowski)