The 49ers’ top two active return men were injured Sunday, as Michael Robinson sustained a right shoulder stinger in the first half and Arnaz Battle exited with a right leg strain.
Starting wide receiver Josh Morgan returned two kickoffs for 101 yards, including a 76-yarder that set up a 49ers’ touchdown. Spare safety Reggie Smith recorded three punts for 7 yards in Battle’s absence.
Others on the 49ers’ preliminary injury report were Brown (left knee contusion), guard David Baas (left ankle), safety Mark Roman (ribs contusion), Reggie Smith (groin), safety Marcus Hudson (back spasms) and tight end Delanie Walker (left forearm).
Tony Wragge replaced Baas and played the entire second half.