UCLA was good. Arizona was good and lucky.
The former played with the precision of a No. 1 seed in dispatching Saint Mary's while the latter looked like a No. 4 in its overtime escape against TCU.
And as of today, that role reversal means nothing. All that matters is the Pac-12's top basketball programs have advanced to the Sweet 16, giving the conference multiple paths to the Final Four and its first national championship in 25 years.