The biggest concern for the Detroit Lions entering Monday Night's game was defensive tackle Corey Williams, who missed the last few weeks while recovering from knee surgery. Now, Williams is back, but the Lions have a host of other injury concerns this week.

WR Titus Young (Knee) - Limited
TE Brandon Pettigrew (Knee) - Limited
DE Cliff Avril (Back) - Limited
DE Ronnell Lewis (Eye) - Limited
DE Kyle Vanden Bosch (Not injury related) - Did not practice
DT Corey Williams (Knee) - Limited
LB Stephen Tulloch (Knee) - Limited
CB Jacob Lacey (Concussion) - Did not practice
CB Bill Bentley (Shoulder) - Did not practice
S Louis Delmas (Knee) - Did not practice

Detroit's secondary is coping with significant injuries, as starting cornerback Bentley and starting free safety Delmas both missed practice Thursday. Pair those injuries with depth CB Lacey also missing practice and it is a serious concern for Jim Schwartz's squad.

It's important to note that, due to this week's game being played on Monday, this is the first injury report of the week, and a lot could change between now and game time.