Since the NFL adopted the 12-team playoff format in 1990, 16 of 31 No. 1 seeds have advanced to the Super Bowl with eight No. 1s being crowned NFL champions.
AFC
Year, No. 1 Seed, Season Result ---- ---------- -------------
2006 San Diego Lost Divisional
2005 Indianapolis Lost Divisional
2004 Pittsburgh Lost AFC Championship
2003 New England Won Super Bowl XXXVIII
2002 Oakland Lost Super Bowl XXXVII
2001 Pittsburgh Lost AFC Championship
2000 Tennessee Lost Divisional
1999 Jacksonville Lost AFC Championship
1998 Denver Won Super Bowl XXXIII
1997 Kansas City Lost Divisional
1996 Denver Lost Divisional
1995 Kansas City Lost Divisional
1994 Pittsburgh Lost AFC Championship
1993 Buffalo Lost Super Bowl XXVIII
1992 Pittsburgh Lost Divisional
1991 Buffalo Lost Super Bowl XXVI
1990 Buffalo Lost Super Bowl XXV
NFC
Year, No. 1 Seed, Season Result ---- ---------- -------------
2007 Dallas Lost NFC Divisional
2006 Chicago Lost Super Bowl XLI
2005 Seattle Lost Super Bowl XL
2004 Philadelphia Lost Super Bowl XXXIX
2003 Philadelphia Lost NFC Championship
2002 Philadelphia Lost NFC Championship
2001 St. Louis Lost Super Bowl XXXVI
2000 New York Giants Lost Super Bowl XXXV
1999 St. Louis Won Super Bowl XXXIV
1998 Minnesota Lost NFC Championship
1997 San Francisco Lost NFC Championship
1996 Green Bay Won Super Bowl XXXI
1995 Dallas Won Super Bowl XXX
1994 San Francisco Won Super Bowl XXIX
1993 Dallas Won Super Bowl XXVIII
1992 San Francisco Lost NFC Championship
1991 Washington Won Super Bowl XXVI
1990 San Francisco Lost NFC Championship