As of the 2008 season, that was the Baltimore Colts in the strike shortened 1982 season who went 0-8-1. For a full season, that was the 1976 Tampa Bay Buccaneers who went 0-14.
The Chicago Bears, who have 709 wins as of the start of the 2010 season.
The Miami Dolphins
a winning season is when a team has more wins than losses. For example a team with a 9-7 (or better) record has had a winning season.
Nine wins is considered a winning season...eight would be even.
San Francisco. It was formerly an NFL record for wins in a decade, but the Colts broke it last week.
49ers
For the 2006 season, the Oakland Raiders had the fewest wins with 2. The Detroit Lions had 3 wins and the Cleveland Browns and Tampa Bay Buccaneers both had 4 wins.
The Chicago Bears have the most victories in NFL history. They are 744-568-42.
The Chicago Bears have the most regular season wins (686) and the most total wins (702) of any NFL team.
Through the 2013 season, the Pittsburgh Steelers (33-21) and the Dallas Cowboys (33-25) are tied for the most playoff wins in NFL history.
The worst NFL season record ever achieved by a team in the history of the league was 0 wins and 16 losses, which has happened multiple times.
San Fransisco '49ers