Duke's Zion Williamson (1) shoots against North Carolina's Coby White (2) and Garrison Brooks (15) during the first half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Chuck Burton)

Duke's Zion Williamson, left, and North Carolina's Luke Maye, right, chase a loose ball during the first half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Chuck Burton)

Duke's Zion Williamson (1) shoots against North Carolina's Garrison Brooks (15) during the first half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Chuck Burton)

Duke head coach Mike Krzyzewski directs his team against North Carolina during the first half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Chuck Burton)

Duke's Zion Williamson (1) drives to the basket against North Carolina during the first half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Chuck Burton)

Duke's Zion Williamson (1) reacts after scoring against North Carolina during the second half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Chuck Burton)

Zion Williamson (1) dunks during the second half of an NCAA college basketball game against North Carolina in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Chuck Burton)

Duke's RJ Barrett, left, and North Carolina's Kenny Williams, right, chase a loose ball during the second half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Chuck Burton)

North Carolina's Coby White (2) drives to the basket against Duke's Zion Williamson (1) during the second half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Chuck Burton)

North Carolina's Nassir Little, right, shoots against Duke's R.J. Barrett, left, during the second half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Chuck Burton)

North Carolina head coach Roy Williams directs his team against Duke during the first half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Nell Redmond)

North Carolina's Coby White (2) flips over after chasing a loose ball against Duke during the first half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Chuck Burton)

North Carolina head coach Roy Williams pumps his fist after a play against Duke during the first half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Chuck Burton)

North Carolina's Cameron Johnson (13) gestures after making a 3-point basket against Duke during the first half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Chuck Burton)

Duke's Zion Williamson (1) reacts after a dunk against North Carolina during the first half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Nell Redmond)

North Carolina's Garrison Brooks (15) dunks against Duke's Javin DeLaurier (12) during the first half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Nell Redmond)

Duke's Zion Williamson (1) and RJ Barrett (5) embrace as they leave the court after Duke defeated North Carolina in an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Chuck Burton)

Duke's Zion Williamson (1) reacts after a dunk against North Carolina during the second half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Nell Redmond)

Duke's Zion Williamson (1) picks himself up from the court after falling during the first half of an NCAA college basketball game against North Carolina in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Chuck Burton)

North Carolina's Coby White (2) grabs a rebound against Duke during the first half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Nell Redmond)

North Carolina's Nassir Little (5) dunks against Duke during the second half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Chuck Burton)

Duke's Zion Williamson (1) dunks against North Carolina during the second half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Chuck Burton)

Duke's Javin DeLaurier (12) dunks against North Carolina during the first half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Chuck Burton)

Duke's Javin DeLaurier (12) is fouled by North Carolina's Luke Maye (32) during the first half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Nell Redmond)

Duke's Zion Williamson (1) shoots against North Carolina's Nassir Little (5) in the final seconds of the second half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Nell Redmond)

Duke's Zion Williamson (1) reacts after a dunk as North Carolina's Garrison Brooks (15) looks on during the second half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Friday, March 15, 2019. (AP Photo/Nell Redmond)

Duke's Zion Williamson drives to the basket against North Carolina during the second half of an NCAA college basketball game in the Atlantic Coast Conference tournament in Charlotte, N.C., Saturday, March 16, 2019. (AP Photo/Chuck Burton)

North Carolina Central coach LeVelle Moton directs his team during an NCAA college basketball game against Norfolk State in the championship of the Mid-Eastern Athletic Conference tournament, Saturday, March 16, 2019, in Norfolk, Va. (AP Photo/Jason Hirschfeld)

FILE - In this March 15, 2019, file photo, Duke's Zion Williamson (1) reacts after a dunk against North Carolina during the second half of an NCAA college basketball game in the Atlantic Coast Conference tournament, in Charlotte, N.C. Williamson was selected to The Associated Press All-America first team, Tuesday, April 2, 2019. (AP Photo/Nell Redmond, File)

FILE - In this March 15, 2019, file photo, Duke's Zion Williamson (1) reacts after a dunk against North Carolina during the second half of an NCAA college basketball game in the Atlantic Coast Conference tournament, in Charlotte, N.C. Williamson was named The Associated Press Player of the Year, Friday, April 5, 2019. (AP Photo/Nell Redmond, File)

FILE - In this March 15, 2019, file photo, Duke's Zion Williamson reacts after his dunk against North Carolina during the second half of an NCAA college basketball game in the Atlantic Coast Conference tournament, in Charlotte, N.C. Williamson was named The Associated Press Player of the Year, Friday, April 5, 2019. (AP Photo/Nell Redmond, File)