Lewis (knee) didn't participate in Thursday's practice, Matt Schneidman of The Athletic reports.
Lewis has continuously popped up on the injury report despite playing in the past four games, but this news is cause for concern for his chances to play Sunday. The veteran hauled in a touchdown pass in last week's win over the 49ers, but he's been relegated to more of a blocking role throughout the season. The tight end depth chart is a bit banged up at the moment, with Lewis, Robert Tonyan (ankle) and John Lovett (knee) all dealing with injuries.