UCLA defeats No. 20 Colorado 72-68 behind Smith's 30 points

Colorado guard Tyler Bey shoots between UCLA forward Cody Riley, left, and guard Jules Bernard during the first half of an NCAA college basketball game Thursday, Jan. 30, 2020, in Los Angeles. (AP Photo/Michael Owen Baker)

UCLA forward Cody Riley (2) tips in the ball over Colorado forward Evan Battey (21) during the second half of an NCAA college basketball game, Thursday, Jan. 30, 2020, in Los Angeles. UCLA won 72-68. (AP Photo/Michael Owen Baker)

Colorado guard guard Shane Gatling, right, collides with UCLA forward Cody Riley during the first half of an NCAA college basketball game Thursday, Jan. 30, 2020, in Los Angeles. (AP Photo/Michael Owen Baker)

UCLA guard Chris Smith (5) celebrates with forward Jalen Hill, left, after the team defeated Colorado 72-68 in an NCAA college basketball game, Thursday, Jan. 30, 2020, in Los Angeles. (AP Photo/Michael Owen Baker)

Colorado's forward Evan Battey, center, and UCLA's guard Jaime Jaquez Jr. (4) and guard David Singleton compete for a rebound during the first half of an NCAA college basketball game Thursday, Jan. 30, 2020, in Los Angeles. (AP Photo/Michael Owen Baker)

UCLA guard Tyger Campbell (10) tries to shoot over Colorado forward Lucas Siewert during the first half of an NCAA college basketball game Thursday, Jan. 30, 2020, in Los Angeles. (AP Photo/Michael Owen Baker)