The odds on George Mason at the beginning of the tournament was 500-1. They are currently at 15/4.
Florida is the favorite at 7/4, followed by LSU at 12/5. UCLA is at 13/4 odds — only slightly higher than George Mason’s odds.
Personally, I’d like to see George Mason win it. They might not even make the tournament next year, that’s how improbable this run has been for them. Unless you follow one of the other three teams, I don’t see how you can not root for GMU.