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SANTA CLARA – Running back Frank Gore did not participate in practice on Tuesday, as he arrived at the team facility after a visit to a doctor as part of the NFL’s protocol on concussions.
Gore must pass the designated steps in order to be available for the 49ers’ game Saturday night against the San Diego Chargers.
Gore did not play in the second half of the 49ers’ 17-7 loss to the Seattle Seahawks on Sunday after sustaining a concussion in the second quarter while blocking linebacker Bobby Wagner.
The 49ers right tackle Anthony Davis to be available to play Saturday after he missed four games with a concussion. Davis was wearing a regular jersey on Tuesday, a likely indication he has received full clearance to return to action.
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Backup running back Carlos Hyde was also not seen on the field at the beginning of practice after sustaining right ankle and back injuries on a third-quarter play.
Linebacker Chris Borland did not practice and defensive coordinator Vic Fangio said it is “a stretch” to expect Borland to play in either of the last two games due to an ankle sprain.
Outside linebacker Ahmad Brooks did not practice after dislocating his left thumb against the Seahawks. Fangio said he was not sure if Brooks would be able to play against the Chargers.
"We’ll find out," Fangio said. "A thumb is an important part of your hand there and if he can’t take on, or if he’s hedging to take on, then we’ll have to play somebody else.”