The UCLA Bruins have the most concerns surrounding them compared to the other No. 1 seeds in the power conference tournaments.
UCLA enters the Pac-12 tournament on Thursday without Jaylen Clark, who was ruled out for the season on Wednesday with an Achilles injury.
Clark's absence leaves a big hole on the UCLA defense, and the Bruins only have a few games to figure out how to best play without him.
The good news for the Bruins is they should be able to work on some things while beating the Colorado Buffaloes in the first of Thursday's four quarterfinals.