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Big-time semifinals in the ACC and Pac-12 are two spots to watch for shifting in the field of 68<p><i>Download the CBS Sports App today and get instant tournament news and alerts, plus play Brackets!</i><p>Only two days remain before Selection Sunday and there figures to be a fair amount of shuffling in the …

Read more at CBS Sports: http://www.cbssports.com/college-basketball/news/bracketology-with-duke-unc-arizona-ucla-on-tap-more-movement-coming/