Updated

The Washington Redskins have restored cornerback Cedric Griffin to the 53-man roster in time for the playoffs after his four-game suspension for violating the NFL's policy on performance-enhancing substances.

Coach Mike Shanahan said Friday that Griffin will be available for Sunday's game against the Seattle Seahawks.

Griffin's suspension ended Monday, and the coaching staff gauged his fitness in practice during the week. He was a regular in nickel packages and had 33 tackles and a forced fumble before his suspension.

Cornerback D.J. Johnson, who sprained his left knee in last week's win over Dallas, was placed on injured reserve to make room for Griffin.

Left guard Kory Lichtensteiger was again unable to practice on his sprained left ankle. Third-round pick Josh LeRibeus will start if Lichtensteiger can't.

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