The Detroit Lions have three players out this week, two of whom are recovering from concussions. They have six players listed as probable on the injury report and four listed as questionable. Here's a full rundown:

Detroit Lions

WR Rashied Davis (Foot) - Questionable

TE Tony Scheffler (Concussion) - Out

OT Jason Fox (Foot) - Questionable

DE Cliff Avril (Elbow) - Probable

DE Lawrence Jackson (Hamstring) - Probable

LB Doug Hogue (Hamstring) - Probable

LB DeAndre Levy (Knee) - Probable

LB Stephen Tulloch (Ankle) - Probable

LB Justin Durant (Concussion) - Out

CB Aaron Berry (Groin) - Questionable

S Louis Delmas (Abdomen) - Probable

S Vincent Fuller (Elbow) - Out

S Amari Spievey (Hamstring) - Questionable

San Francisco 49ers

FB Moran Norris (Fibula) - Out

WR Braylon Edwards (Knee) - Out

WR Michael Crabtree (Feet) - Probable

WR Ted Ginn (Finger) - Probable

OG Mike Iupati (Knee) - Probable

OG Adam Snyder (Forearm) - Probable

DT Isaac Sopoaga (Infection) - Probable

LB NaVorro Bowman (Neck) - Probable

CB Tramaine Brock (Hand) - Out

CB Shawntae Spencer (Toe) - Probable

S Dashon Goldson (Knee) - Probable