Auburn is the top seed in the South Region, and it was only a month ago that some metric sites were calling the Tigers one of the most dominant teams in modern history. Then Auburn lost three of its last four games, and some wondered if the Tigers should even be on the one line come Selection Sunday. 

The Tigers' total body of work is still impressive, and they are a deserving No. 1 seed. However, which Auburn are we going to see in the NCAA Tournament? The one that dominated the best conference in America for two months, or the one that faltered down the stretch? 

If Auburn did peak too early, No. 2 seed Michigan State or No. 3 seed Iowa State could be in the Final Four. Here is a breakdown of a competitive South region. 

Who does SportsLine expert Thomas Casale have as his Final Four pick out of the South Region? What about a team to make a potential Cinderella run? Join SportsLine right now to see get the full breakdown from each region, all from an expert who is on a 57-32 ATS run at SportsLine!