In 1981, the CFL started to track quarterback stats as an official statistic. It was also the year Grover Covington joined the Hamilton Tiger-Cats. Covington had 16 sacks in his rookies season to capture an East All-Star selection, and would go on to collect a total of 154 quarterback sacks. As of 2010, Covington is the all-time CFL sack leader with no challengers in sight. Covington would play his entire 11 years with the Tiger-Cats, finally calling it quits in 1991. Besides that initial East All-Star selection, Covington would go on to win another six such honours, in consecutive years from 1985 to 1990. There would be four CFL All-Star selections in that stretch (1985, 1986, 1988 an 1989). Covington would twice lead the CFL in sacks (1985 and 1989). Covington's best season was 1989 when had 25 quarterback sacks (currently third highest single season total in CFL history) and was named the Outstanding Defensive Player in the CFL. In 2000, Covington was elected to the Canadian Football Hall of Fame.
Defensive tackles were first officially kept as a stat in 1987 and special teams tackles in 1991.