08:01 AM ET 10.17 | Buckle up, Redskins fans. As soon as Rex Grossman threw his fourth interception of the day against the Philadelphia Eagles, offensive coordinator Kyle Shanahan turned to backup John Beck -- who hadn't played a snap in a regular season NFL game since Dec. 30, 2007 -- and said: "Let's go. You're in." ... Grossman, the author of 11 turnovers in his five games this season, stood on the sideline and kept his helmet squarely on his head. And both men began a week in which there is only one relevant question to Coach Mike Shanahan: Who's your quarterback? "I would never announce that right after a game," Shanahan said. Here we go. "Who knows what'll happen next?" Beck said.