Packers-49ers rough play foul enforcement half a second from being right – Football Zebras
Penalty on Clay Matthews' Textbook Hit Embroils NFL in Another Rules Controversy, News, Scores, Highlights, Stats, and Rumors
Former Green Bay Packer Clay Matthews lobbies for job reviewing calls: 'I'd like to be employed by the NFL'
Watch: Clay Matthews flagged again during sack, calls league 'soft'
Clay Matthews Stats, News and Video - OLB
Hottest Take of the Week - Clay Matthews' penalty and the War of 1812 - Acme Packing Company
Watch: Clay Matthews flagged again during sack, calls league 'soft'
Why the NFL Called the Controversial Penalty on Clay Matthews
Packers' Clay Matthews: NFL 'getting soft' after latest roughing penalty
Did the Packers get robbed on that Clay Matthews penalty?
Clay Matthews Stats, News and Video - OLB
NFL says controversial Clay Matthews call was 'text book' roughing the passer - Sports Illustrated
Tackling the NFL's “roughing the passer” controversy - The Johns Hopkins News-Letter
Twitter upset after Packers' Za'Darius Smith flag for roughing passer
NFL stands by controversial call against Clay Matthews, will use hit as example of what not to do