Packers linebackers came to play
Packers lose Clay Matthews to Rams, Randall Cobb to Cowboys
The NFL can flag Clay Matthews, but it can't take the danger out of football - The Washington Post
NFL to use Clay Matthews penalty in teaching video
Pro Football Draft Guide 2017 by Cheesehead TV - Issuu
NFL rules penalty on Green Bay Packers' Clay Matthews was correct - ESPN
NFL: Linebacker Clay Matthews signs new long-term contract with Green Bay Packers, NFL News
Clay Matthews one of best at converting pressures into sacks
NFL to use Clay Matthews penalty in teaching video
Packers notes: NFL to showcase Clay Matthews hit as what not to do
Clay Matthews pumps up Packers' defense