TIPPING OFF: First 2 Final 4 spots on the line

Gonzaga guard Josh Perkins, right, and Florida State guard PJ Savoy chase a loose ball during the second half an NCAA men's college basketball tournament West Region semifinal Thursday, March 28, 2019, in Anaheim, Calif. (AP Photo/Marcio Jose Sanchez)

Texas Tech's Jarrett Culver and Buffalo's Dontay Caruthers, right, chase a loose ball during the first half of a second round men's college basketball game in the NCAA Tournament Sunday, March 24, 2019, in Tulsa, Okla. (AP Photo/Charlie Riedel)

Purdue's Carsen Edwards (3) goes to the basket against Tennessee's Lamonte Turner (1) during the first half of a men's NCAA Tournament college basketball South Regional semifinal game, Thursday, March 28, 2019, in Louisville, Ky. (AP Photo/Michael Conroy)

Virginia's Mamadi Diakite (25) and Oregon's Ehab Amin (4) face off during the second half of a men's NCAA Tournament college basketball South Regional semifinal game, Thursday, March 28, 2019, in Louisville, Ky. Virginia won 53-49. (AP Photo/Timothy D. Easley)