UNC vs. Butler Preview Posted Mar 23, 2017 The South Region's top-seeded Tar Heels play No. 4 seed Butler for a spot in the Elite 8 on Friday night off Beale St. The Sweet 16 affair tips at 7:09pm ET on CBS. Chris Holtmann has made this Butler team his own during his first three years in charge.The fourth-seeded Bulldogs kicked off their NCAA Tournament journey with a successful weekend in Milwaukee. (Inside Carolina)