The second 2012 NCAA bracket

Maalik Wayns and the Villanova Wildcats could be a bubble team in 2011-12. Richard Mackson/US Presswire

Welcome back to the expanded edition of Joe Lunardi's Rundown. This file will take you deeper into Bracketology. For additional explanation of the (super) early bubble movement, see our Behind the Bracket entry.

Conference breakdown

Here's how the bids broke down in the bracket: Big East (10), Big Ten (seven), ACC (six), Big 12 (six), Pac-12 (five), SEC (five), West Coast (three), Atlantic 10 (two), Mountain West (two).

The bubble battle

Thanks to the new 68-team field and its "First Four" component, we have more bubbles than ever to track.

You can probably guess why Texas A&M has trended down since the last edition of Bracketology. Without a coach, the Aggies are in a state of flux. The others are a little more fluid.