Griffin (ankle) will start for the Redskins Sunday against the Vikings, NFL.com's Ian Rapoport reports. Griffin participated fully in Wednesday's practice, and has been able to log work on the practice field for just over a week now. He emerged from the day of work feeling good, and will therefore take over the reigns as the starter, delegating Colt McCoy to a backup role. Griffin will continue to log practice reps on Thursday and Friday, but those reps should be almost exclusively with the first-team offense.