Obvious upsets? Not this year. Not only does the bracket feature an unusually low number of fertile Killers (thanks, selection committee, for leaving out San Diego State, St. Mary's and Davidson), but most of the vulnerable Goliaths didn't draw well-armed Davids. Still, there are a few opportunities for Giant Killers to strike, and we'll guide you through the East and the South Regions first. If these numbers are unfamiliar to you, check out our methodology and our Giant Killers blog.