INDIANAPOLIS -- AP -- Houston's Kelvin Sampson has gotten a lift from transfers in guiding the Cougars back to the NCAA Tournament's Sweet 16. The second-seeded Cougars have multiple transfer starters, including Associated Press third-team All-American Quentin Grimes from Kansas. That group has helped the Cougars extend the best sustained run since the "Phi Slama Jama" days of the 1980s.

Get our free mobile app

Sampson says teams that don't take on transfers in today's game are behind. Transfers are also playing key roles for several top teams. That list includes No. 1 overall tournament seed Gonzaga, Baylor, Michigan and Arkansas.

LOOK: Answers to 30 common COVID-19 vaccine questions

While much is still unknown about the coronavirus and the future, what is known is that the currently available vaccines have gone through all three trial phases and are safe and effective. It will be necessary for as many Americans as possible to be vaccinated in order to finally return to some level of pre-pandemic normalcy, and hopefully these 30 answers provided here will help readers get vaccinated as soon they are able.

The 40 Best Cover Songs by Rock Bands