If Houston beats AZ today, that does make a slight case for Houston as the 4th #1 seed and in the South makes the S16/E8 site of Houston palatable. Not saying it will happen, but the NCAA selection committee absolutely can move teams up and down to fit smoothing of say SEC teams not playing each other in the first 2 rounds or to solve the Houston "home" S16/E8 issue if they are a 2 and the 1 seed is far from there.
The rule they can use is:
- Additionally, when placing teams into the bracket, the committee may move a team up or down one seed line — and in rare cases, two seed lines — from its true seed to ensure all bracketing principles are properly met.
The NCAA’s guide to how the 68 teams are chosen, seeded and bracketed for the Division I men's basketball tournament every season.
www.ncaa.com
A lot to unpack but ultimately a lot of flexibility and some hard rules.