Someone off the street could see playing time Sunday against the Steelers.
The Chargers offensive line is hammered by injury, and it'll likely enter Pittsburgh this week without three starters available. The question now is where that leaves the team.
"That's the mystery," coach Norv Turner said. "That's the one we're going to work on solving over the next two days."
San Diego will hold workouts Tuesday and make at least one signing to patch up the unit.
Right tackle Jeromey Clary injured his left knee Sunday against the Bengals. Left guard Tyronne Green aggravated a hamstring injury later in the first half, and left tackle Michael Harris suffered a high ankle sprain late in the third quarter.
Harris fought through the sprain to finish the game.
Turner does not expect Clary to play Sunday. As for Harris and Green, he called it a "stretch" to think they'll be ready.