worst quarterback qbr in nfl history through 4 seasons with at least 1000 pass attempts
best win percentage in nfl from 1992 to 1996
baker mayfield and peyton manning first 4 seasons
best win percentage in nfl from 1992 to 1995
worst player qbr in nfl history through 4 seasons with at least 1000 pass attempts
best win percentage in nfl from 1976 to 1985
best win percentage in nfl from 1979 to 1988
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
