Packers veteran linebacker Clay Matthews told reporters he was disappointed after being called for his third roughing the passer penalty of the season on Sunday against the Redskins.
Late in the third quarter, Matthews sacked Washington quarterback Alex Smith and brought him down for what looked like a textbook tackle, but as he and Smith hit the ground, their helmets collided and Matthews drew a flag.
NFL Football Operations posted a tweet with video of the play, explaining that Matthews violated Rule 12, Section 2, Article 9(b), which prevents a defender from landing "with all or most [their] weight" on a passer.