Griffin played the majority of Sunday's loss to the Giants after Colt McCoy left the game in the first quarter with an aggravated neck injury. Griffin finished the game 18-of-27 for 236 yards and a touchdown. He also rushed for 49 yards on 14 carries and had a rushing touchdown controversially called back by officials.
Washington lost the game 24-13, falling to 3-11 on the season.
McCoy had started the last three games for Washington after Griffin was benched following the team's Nov. 23 loss to the San Francisco 49ers. Gruden said on Monday that McCoy's neck injury would keep him out of Saturday's game.
In seven games and five starts this season, Griffin has thrown three touchdowns and three interceptions over 1,138 passing yards.
Washington hosts Philadelphia on Saturday at 4:30 p.m. ET before closing out its season at home against the Cowboys.
- Stanley Kay