San Francisco 49ers quarterback Brock Purdy is currently managing a sore back following the team's recent loss to the Rams. Coach Kyle Shanahan has indicated that Purdy's condition is day-to-day, and while it doesn't seem to be a significant issue, it may affect his practice participation leading up to the upcoming game against the Patriots. The 49ers are already facing challenges with multiple key offensive players sidelined due to injuries.

• Brock Purdy is dealing with a sore back but is not expected to miss significant time.
• The 49ers are facing a tough situation with multiple key players injured, including Christian McCaffrey and Deebo Samuel.