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Duke-Louisville, UVA-Notre Dame, OK State-Iowa State and USC-UCLA are impact contests<p><i>Download the CBS Sports App today and get instant tournament news and alerts, plus play Brackets!</i><p>It is unusual to find important games in the early rounds of conference tournaments that do not involve bubble teams, …

Read more at CBS Sports: http://www.cbssports.com/college-basketball/news/bracketology-4-conference-tourney-games-could-flip-ncaa-tournament-seeding/