San Francisco 49ers quarterback Brock Purdy is dealing with shoulder soreness that has limited his practice participation. After being ruled out for Week 12 against the Packers, he has resumed throwing and could potentially return for the Week 13 matchup against the Bills. Coach Kyle Shanahan indicated that Purdy's practice participation in the coming days will be crucial for his availability.

• Brock Purdy's shoulder injury has raised concerns about his availability for upcoming games.
• His limited practice participation will be closely monitored as the week progresses.