Washington Redskins DE Adam Carriker will again have surgery on a torn quad muscle. (Otto Greule Jr./Getty Images)
Carriker, 29, will have surgery on the tendon for the third time. It caused him to only play in two games last season.
The timetable for his return is unknown but if he ends up on the physically unable to perform list, he will have to sit for the Redskins' first six regular-season games.