ALLEN PARK — Running back Kevin Smith is out for the final three games of the season after tearing at least one ligament in his left knee in Sunday’s 48-3 loss at Baltimore.

Surgery is scheduled for Smith and more will be known after the doctors go in and determine the severity of the injury. He tried to make a cut and his foot got stuck in the turf, severely twisting his knee.

Schwartz also said that tests were encouraging on safety Louis Delmas’ sprained ankle. “We’ve been encouraged by the tests that have come back, but ankles can be funny things,’’ Schwartz said. “He’s dealt with an ankle sprain on the opposite (foot), but it’s been a lateral sprain not a high sprain.’’

The status of long snapper Don Muhlbach is up in the air. He was knocked out of the game with a head injury.
— PAULA PASCHE