SANTA CLARA -- Cornerback Carlos Rogers is not practicing Wednesday due to a right hamstring strain and remains questionable for the 49ers' playoff opener Sunday at the Green Bay Packers.
Rogers hobbled off the field late in the 49ers' regular-season finale Sunday against the Arizona Cardinals.
"He was sore yesterday but he's feeling better today," 49ers coach Jim Harbaugh said of Rogers.
If Rogers is unable to play Sunday against Aaron Rodgers and the Packers, Tramaine Brock and Tarell Brown would start at the 49ers cornerback positions. Veteran Eric Wright would enter in nickel situations to cover the slot receiver.
When the 49ers go with four cornerbacks in their "dime" defense, Perrish Cox would likely enter the game. The 49ers re-signed Cox on Monday. Cox was released by the Seattle Seahawks on Friday after playing two games while cornerback Walter Thurmond served a suspension.