The men’s NCAA Tournament tips off Tuesday with an appetizer for the madness to come. The First Four has been around since 2011 and features the last four automatic qualifiers and last four at-large bids playing to whittle the field from 68 to 64.

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.