Duke forward Zion Williamson (1) goes up for a dunk against North Dakota State forward Rocky Kreuser (34) during the first half of a first-round game in the NCAA men’s college basketball tournament Friday, March 22, 2019, in Columbia, S.C. (AP Photo/Sean Rayford)

Tennessee's Grant Williams, right, drives to the basket against Iowa's Joe Wieskamp in the first half during a second-round men's college basketball game in the NCAA Tournament in Columbus, Ohio, Sunday, March 24, 2019. (AP Photo/John Minchillo)

North Carolina's Coby White (2) drives past Louisville's Malik Williams (5) during the second half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Thursday, March 14, 2019. (AP Photo/Nell Redmond)

Gonzaga forward Brandon Clarke (15) blocks the shot of Baylor guard Mario Kegler (4) during the second half of a second-round game in the NCAA men's college basketball tournament Saturday, March 23, 2019, in Salt Lake City. (AP Photo/Rick Bowmer)