NCAA Tournament officially begins Tuesday and Wednesday with First Four action followed by first- and second-round games on Thursday and Friday as part of a rollercoaster opening week that will see the 68-team field quickly shrink to a Sweet 16 in the span of six days.

This is Selection Sunday, and there is plenty of intrigue entering the show. Michigan and Florida’s conference tournament wins in the Big Ten and SEC, respectively, will have interesting impacts on the top-four seeds.