NCAA field missing mainstays Duke, Kentucky and Louisville

Duke head coach Mike Krzyzewski watches the action during the second half of an NCAA college basketball game against Louisville in the second round of the Atlantic Coast Conference tournament in Greensboro, N.C., Wednesday, March 10, 2021. (AP Photo/Gerry Broome)

Kentucky head coach John Calipari watches his team during the first half of an NCAA college basketball game against South Carolina in Lexington, Ky., Saturday, March 6, 2021. (AP Photo/James Crisp)

Louisville head coach Chris Mack directs his team during the first half of an NCAA college basketball game in the second round of the Atlantic Coast Conference tournament in Greensboro, N.C., Wednesday, March 10, 2021. (AP Photo/Gerry Broome)

Louisville head coach Chris Mack, center, talks with his team during the first half of an NCAA college basketball game against Duke in the second round of the Atlantic Coast Conference tournament in Greensboro, N.C., Wednesday, March 10, 2021. (AP Photo/Gerry Broome)