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Riley Reiff, shown at left blocking for Matthew Stafford, is dealing with a hip issue.

(AP Photo)

ALLEN PARK -- Receiver Marvin Jones and right tackle Riley Reiff were at Detroit Lions practice on Tuesday as preparations began for the playoff opener against Seattle.

But Reiff sat out most drills that were open to the media, which casts uncertainty over his status for the Seahawks game.

Reiff suffered a hip injury sometime after Friday's practice and was scratched from the regular-season finale against Green Bay. Corey Robinson replaced him, but then suffered a season-ending foot injury. That means Cornelius Lucas is the club's top healthy right tackle, followed by Garrett Reynolds, who was signed shortly before practice.

The only player on the 53-man roster to miss practice was Andre Roberts, although that doesn't account for Robinson and corner Asa Jackson, who were placed on injured reserve earlier in the day. Roberts has dealt with a shoulder injury since the Dallas game, but was able to play through it against Green Bay.