The New York Jets will be without defensive end Kenrick Ellis for 4-6 weeks with what coach Rex Ryan labeled a "significant" knee injury.
The MCL injury suffered Monday against the Houston Texans is likely a small tear.
Ellis isn't the only player on injury watch this week. All-Pro center Nick Mangold didn't practice Thursday and safety Eric Smith, who sprained his knee in Wednesday's practice, was also out.
Ryan said Thursday that Smith appeared to avoid serious injury but he will not play against the Colts this week.