Yesterday we visited upset city in the Big Dance. Today it all about big dogs going down. Who is the most vulnerable top seed and who among the 1-4s could be a wallflower when the Hoop Hop is narrowed to 16 sweeties?

Among the top four seeds I think North Carolina in the East has the toughest road. The Heels could be looking at a physical team that can defend in Michigan State in the second round. After that, four-seed and Kevin Durant await although UNC may matchup better with the Horns than they do against Georgetown who I believe will beat North Carolina if that’s the game.

Ohio State is my other pick to stumble for no particular reason aside from freshman monster talent Greg Oden may not have to chops Carmelo Anthony did when he led Syracuse to title as a frosh.

Other high seeds that need to be on upset alert: Virginia (4), Maryland (4) and Pitt (3).

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I have two George Masons this year. Sure it’s a homer call but Creighton is playing well and it has a strong guard in Nate Funk. Altman is smart and focused. His kids play like it, too. If they get by Memphis in the second round in the South look out.

Virginia Commonwealth is my other Cinderella pick. Great guard play, few turnovers, good defenders, and seniors everywhere. If they beat Duke and the confidence goes up, look for them to play UCLA in the Elite Eight.