5:19 PM ET
Lock is expected to miss practice time this week with the injury, and his status for Sunday’s game against the Miami Dolphins is in doubt.
He was hurt in Sunday’s loss to the Las Vegas Raiders.
Lock already has missed two games this season and most of a third with a right (throwing) shoulder injury. He returned in Week 6 against the New England Patriots and has started the five games since.
Lock is in his first full season as the team’s starter. Coach Vic Fangio said even if Lock has somehow recovered enough physically by week’s end to play against the Dolphins, any missed practice time this week would factor into any decision of him starting, as well.
“That will definitely enter into the equation,” Fangio said Monday. “We definitely want Drew to have a good week of preparation, so he’s ready to play the game. That could enter into the equation as we go through the week.”