Sweet questions for the next two rounds

Now that the field has been trimmed to 16, who are the favorites? Who will be upset? What double-digit survivor was the biggest stunner? What player should we keep an eye on? And what the heck is a Hilltopper?

With the Sweet 16 just around the corner, here are 16 pressing questions (plus a bonus) that need answering. And our experts -- Jay Bilas, Hubert Davis, Fran Fraschilla, Doug Gottlieb, Reggie Rankin and Dick Vitale -- give you their answers.