#4 Arizona vs # 1 Xavier
Arizona will have a rebounding advantage and be able to limit Xavier's second chance points. Xavier doesn't the size to match up with Arizona's bigs.
#2 Duke vs. #1 Villanova
Duke wins this due to their stronger defense and ability to generate free throws.
#4 Arizona Vs # 2 Duke
This game is going to come down to rebounding and defending without fouling.