Shanahan: Griffin will likely be game-day decision

Washington Redskins quarterback Robert Griffin III will likely be a game-day decision for Sunday's contest against the Cleveland Browns, according to head coach Mike Shanahan.

Griffin, who suffered a Grade I sprain of the lateral collateral ligament in his right knee during the fourth quarter of Sunday's 31-28 overtime triumph over the Ravens, practiced for a second straight day on Thursday.

After participating in non-contact drills during Wednesday's session, the rookie sensation looked better in Thursday's session. Shanahan said that Griffin "looked more comfortable" on Thursday.

Fellow rookie Kirk Cousins would draw his first career start in the event Griffin is held out. The 2012 fourth-round pick took over for a hobbled Griffin against the Ravens and threw a touchdown pass to Pierre Garcon with 29 seconds left in regulation to bring the Redskins within 28-26, then ran in the subsequent conversion attempt to force overtime.

"I don't know yet," Shanahan said when asked who would start at quarterback. "We'll get a chance to see how Robert progresses during the week, and we'll make a decision probably on game day."

Griffin has started every game this season for Washington, which has vaulted back into playoff contention in the NFC by ripping off four consecutive victories, and is presently tied with New England's Tom Brady for the NFL lead with a 104.2 passer rating. The 22-year-old also tops all quarterbacks with 748 rushing yards and has thrown for 18 touchdowns with just four interceptions while completing 66.4 percent of his attempts.

The 2011 Heisman Trophy recipient has been particularly good during the Redskins' current unbeaten run, having amassed 10 touchdown passes and only one interception along with a 68.5 percent completion rate over that stretch.