In 1977http://www.nfl.com/history/chronology/1971-1980
1978.
Beginning in 1978, the NFL increased its schedule from 14 to 16 games.
As of recent seasons, approximately 2-3% of NFL games go into overtime. This rate can vary slightly from year to year, but generally, only a small fraction of games require extra time to determine a winner. Overtime rules were established to ensure a fair resolution while minimizing the chances of games going beyond regulation time.
1967
1978
YES!
No, the Miami Dolphins went 14-0 in the 1972 NFL season. There were only 14 games in the regular season at that time.
He was drafted in 2006.
Yes, at least a year.
16 days
There have been 2 teams to go 0 and 16, the 2008 Lions and 2017 Browns.
The 2008 Detroit Lions are the only team to do so.