Detroit, MI (Sports Network) - Detroit Lions running back Kevin Smith and wide receiver Calvin Johnson are both questionable for Sunday's game against the Seattle Seahawks.

Smith re-aggravated a shoulder injury in Sunday's 17-10 loss To St. Louis that he originally suffered in a Week 3 win against Washington. He was held out of practice on Wednesday but practiced on a limited basis on Thursday and Friday.

Wide receiver Calvin Johnson, who has missed the past two games with a shoulder injury, was limited in practice all week.

Quarterback Matthew Stafford (knee), defensive tackle Sammie Lee Hill (ankle) and defensive end Dewayne White (elbow) are all listed as probable.

The 1-6 Lions play at Seattle on Sunday.