How many times has a 2 seed won NCAA basketball tournament?

12 (The Big East had 3 in 2009)

ACC - 4

Big East - 3

Big10 - 2

Pac10 - 1

Big12 - 1

SEC - 1

2009 - Big East (Pitt, UConn, Louisville)

2006 - Big East (Villanova, UConn)

2005 - ACC (Duke, UNC)

2003 - Big12 (Oklahoma, Texas)

2002 - ACC (Maryland, Duke)

2001 - Big10 (Illinois, Michigan St)

2000 - Pac10 (Stanford, Arizona)

1998 - ACC (UNC, Duke)

1993 - Big10 (Indiana, Michigan)

1985 - Big East (Georgetown, St. John's)

1982 - ACC (UNC, UVA)

1980 - SEC (UK, LSU)