DeMarcus Ware of the Dallas Cowboys with 20.
Elvis Dumervil of the Denver Broncos. He had 17 sacks.
"Mean" Joe Greene holds the record for most sacks in a month for the Pittsburgh Steelers.
Julius Peppers is the career leader in sacks for the Carolina Panthers. Thru week 5 of the 2008 NFL season, Peppers has amassed 59 sacks in his career with Carolina.
The linebacker with the most sacks in an NFL season is Justin Houston of the Kansas City Chiefs. He finished with 22.0 sacks in 2014.
In 1981 Klecko had 20.5 sacks and Gastineau had
S.Gerrard
In the NFL, as of the 2008 season the record for most sacks in a season by a team is 72 by the 1984 Chicago Bears.
The Dallas Cowboys led the league in sacks with 59.
There isn't really a record kept for fewest sacks in a season by a player, as there are thousands of NFL players who have not had any sacks. Michael Strahan holds the record for most sacks in a season, at 22 1/2.
Mike Berg of the Green Bay Packers had 9 sacks in the 1979-1980 season.
Unfortunately, Karras retired after the 1970 season. The NFL did not begin recording sacks officially until 1982.
Through 12 games of the 2012 season that is DE Aldon Smith of the 49ers with 17.5 sacks.