ALLEN PARK, Mich. -- The Detroit Lions went outside for the second straight day Thursday and were without three potential starters during practice.

The first, defensive tackle Nick Fairley, was expected as he hasn't practiced since injuring his knee in Week 8.

The second, defensive tackle C.J. Mosley, was added to the injury report late, as he was limited Wednesday for non-injury reasons. He was also not in attendance Thursday.

The third, left guard Rob Sims, was at practice Wednesday so his injury is currently unknown.

LaAdrian Waddle was also not at practice after being put on injured reserve late Wednesday. On Thursday, Detroit coach Jim Caldwell said Waddle is likely headed for surgery on his left knee, but he didn't know exactly when that would occur.