The Steelers have seven defensive players on the injured list heading into Sunday's game against the New England Patriots, and all seven were either expected to, or have started, one of the first two games this season.
The players include linebacker Alex Highsmith, defensive lineman Isaiahh Loudermilk, cornerback Joey Porter Jr., defensive lineman Derrick Harmon, safety DeShon Elliott, cornerback Darius Slay and linebacker Patrick Queen.
Coach Mike Tomlin cited that attrition as one of the reasons the Seattle Seahawks were able to break open a tight game late and defeat the Steelers, 31-17, Sunday.
"I thought our defense wore down some, particularly as the game went on," said Tomlin. "We had the desire to improve our run defense, and I thought, particularly initially, we did. But there'