Overview

• Purdy practiced all week, was a full participant Friday, and carries no injury designation after missing two games with a turf-toe variant and a non-throwing shoulder issue.
• Backup Mac Jones is listed as questionable with a knee injury, and practice-squad quarterback Adrian Martinez could be elevated to serve as Purdy’s No. 2 if needed.
• Star edge rusher Nick Bosa underwent ACL surgery and will miss the remainder of the season, with the team describing the procedure as a clean repair.
• Wide receivers Jauan Jennings (ankle, shoulder) and Ricky Pearsall (knee) are questionable for Sunday, leaving Purdy’s pass-catching group uncertain.
• San Francisco is 3-0 after two wins led by Jones (563 passing yards, four touchdowns, one interception), as defensive coordinator Robert Saleh’s remarks about Jacksonville’s sign-stealing practices add a tactical subplot.