Creighton is going to be dangerous. Those freshmen were playing exceptionally well in March. Also, Kalkbrenner doesn't get talked about whole lot. But, he's a heckuva a low post player - and an elite shot-blocker. Crazy that Creighton played as well as they did against Kansas without Nembhard and Kalkbrenner.
Arkansas has been doing well under Eric Musselman the last 2 years, but it will be a different situation when they are expected to make final 4 or further. Just look at Gonzaga, they seem to have played better as 3-8 seed rather than top 2 seeds.