LAS VEGAS NV - FEBRUARY 12: Head coach Steve Fisher of the San Diego State Aztecs yells at his bench during the team's game against the UNLV Rebels at the Thomas & Mack Center February 12 2011 in Las Vegas Nevada. San Diego State won 63-57. (Photo by Ethan Miller/Getty Images)
It's a tight race for the four No. 1 seeds in the 2011 NCAA Tournament as Selection Sunday approaches. We have no clear-cut favorite, and even in late February, it's likely that not one of the current top six teams are guaranteed to headline a bracket.