Washington quarterback Robert Griffin III has received medical clearance to return from a concussion he sustained just over three weeks ago and is probable for Sunday's season opener against Miami. Coach Jay Gruden, speaking after Friday's practice, didn't say whether Griffin or Colt McCoy will back up starter Kirk Cousins against the Dolphins. Neurologist Robert Kurtzke originally advised the team Griffin could return to play in an Aug. 29 preseason game against Baltimore. More...