PFF Record Book — Defense: Highest-graded seasons at every position, NFL News, Rankings and Statistics
PFF ranks Bears' Khalil Mack No. 6 best player in NFL – NBC Sports Chicago
Khalil Mack and Aaron Donald are subject to huge fines for missing pre-season games
NFL on ESPN - Who are the best of the best in the trenches? Pro Football Focus ranks the best: (E+)
Khalil Mack, Cordarrelle Patterson named to Pro Bowl
3: Khalil Mack (LB, Bears), Top 100 Players of 2019
Ranking NFL's top defensive linemen of 2022: Aaron Donald, T.J. Watt cream of the crop on impressive list
Restructured Deal Could Be Win-Win for Aaron Donald and Rams
Edge Defender Rankings: The 32 best players entering the 2021 NFL season, NFL News, Rankings and Statistics
The NFL's Best Players Are Getting Richer Than Ever - WSJ
Top 10 EDGE rushers, defensive linemen in NFL: Khalil Mack, Fletcher Cox settle for 2nd behind two future Hall of Famers
Aaron Donald, Rams agree on new contract, big raise – Orange County Register
Khalil Mack wins NFL Defensive Player of the Year
Rams' Aaron Donald ranked No. 1 by peers in NFL's 'Top 100 Players of 2019' - Los Angeles Times