The first two rounds of March Madness are over, and 16 teams remain -- all very good ones, mind you. So we asked ESPN.com's panel of college basketball experts about which very good 1-seed teams could have a rough go this weekend, and also how they feel about the 12 other teams still capable of cutting down the nets in Minneapolis.
Duke was extremely lucky to survive against UCF. Virginia and North Carolina had rough first halves against 16-seeds in the first round. Which No. 1 seed are you most worried about heading into the Sweet 16?
Myron Medcalf, Senior College Basketball Writer: This is when region matters most.