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Joe Lunardi's latest Bracketology update

Here is Joe Lunardi's latest bracket update. Check back with the Nation blog each night this week for an update from Joe and then again each morning for his full bracket and complete rundown.

The biggest development on Tuesday night? With Butler's win in the Horizon final, Milwaukee is taken off the auto-bid line, thus freeing up an at-large spot that Butler once occupied. The benefactor? For now, Lunardi says Georgia, which is included in his latest Last Four In.

As for Villanova, its stunning collapse -- a loss to the South Florida in the Big East opening round merely the latest defeat -- is not enough to move the Wildcats completely out of the bracket. However, they are creeping dangerously close to having to play in the First Four games in Dayton. This coming from a team that was No. 7 in the country in late January.

(A note on Nova: Our ESPN researchers unearthed a doozy, thanks to an assist from bracketscience.com. If the Wildcats are selected as an at-large, they would become the first team since the field expanded in 1985 to enter the NCAA tournament on a five-game losing streak. Four tourney teams have lost lost their last four games before Selection Sunday: 1985 Boston College, 1987 Georgia Tech, 1992 Missouri and 2006 NC State.)

TOP SEEDS

East: Ohio State

Southwest: Kansas

Southeast: Pittsburgh

West: Duke

*Next in line: Notre Dame

CONFERENCE BREAKDOWN

Big East (11)

ACC (6)

Big Ten (6)

Big 12 (6)

SEC (5)

Atlantic 10 (3)

Mountain West (3)

Pac-10 (3)

Colonial (2)

West Coast (2)

LAST BYES (avoid First Four games in Dayton)

Villanova

Michigan

Clemson

Boston College

LAST FOUR IN

Michigan State

Virginia Tech

Colorado

Georgia

FIRST FOUR OUT

Alabama

USC

Missouri State

Washington State

NEXT FOUR OUT

Baylor

Nebraska

Memphis

UTEP