Familiar look: Top seeds dominate spots for NCAA Sweet 16

Gonzaga's Zach Norvell Jr. (23) and Rui Hachimura (21) celebrate a score against Baylor during the first 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)

Virginia's Mamadi Diakite (25) hugs Braxton Key after Virginia defeated Oklahoma 63-51 in a second-round men's college basketball game in the NCAA Tournament in Columbia, S.C., Sunday, March 24, 2019. (AP Photo/Richard Shiro)

Kentucky's Jemarl Baker Jr. (13) is greeted by fans as he leaves the court after defeating Wofford in a second-round game in the NCAA men’s college basketball tournament in Jacksonville, Fla., Saturday, March 23, 2019. (AP Photo/Stephen B. Morton)

Tennessee's Grant Williams, left, and Iowa's Connor McCaffery battle for the ball 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)

Kansas guard K.J. Lawson (13) reaches in for the ball on Auburn guard Bryce Brown (2) during the first half of a second-round game in the NCAA men's college basketball tournament Saturday, March 23, 2019, in Salt Lake City. (AP Photo/Jeff Swinger)

Oregon guard Payton Pritchard celebrates after scoring against UC Irvine during the second half of a second-round game in the NCAA men's college basketball tournament Sunday, March 24, 2019, in San Jose, Calif. (AP Photo/Jeff Chiu)

Duke's Zion Williamson, center, celebrates the team's 77-76 win over Central Florida in a second-round men's college basketball game in the NCAA Tournament in Columbia, S.C., Sunday, March 24, 2019. (AP Photo/Richard Shiro)

North Carolina's Nassir Little (5) shoots against Washington's Matisse Thybulle, left, during the second half during a second-round men's college basketball game in the NCAA Tournament, Sunday, March 24, 2019, in Columbus, Ohio. (AP Photo/John Minchillo)