worst player qbr in nfl history through 4 seasons with at least 20 starts
best win percentage in nfl from 1979 1o 1988
best win percentage in nfl from 1977 to 1996
best win percentage in nfl from 1976 to 1995
best win percentage in nfl from 1975 to 1994
fewest points allowed per game season 49ers
best win percentage in nfl from 1988 to 2007
best win percentage in nfl from 1980 to 1999
fewest points allowed per game season raiders
best win percentage in nfl from 1994 to 2013
best win percentage in nfl from 1993 to 2012
fewest points allowed per game season steelers
best win percentage in nfl from 1992 to 2011
least passing touchdowns with over 500 passing yards in an nfl game
best win percentage in nfl from 1991 to 2010
