NFL historic adjusted sack rates since 1996 (Football Outsiders records go back until then):

1. 2019 49ers: 12.2%
2. 2000 Ravens: 11.9%
3. 2001 Saints: 10.7%
4. 1999 Broncos: 10.2%
5. 1997 Chiefs: 10%

— David Lombardi (@LombardiHimself) October 30, 2019