The 49ers on Tuesday announced their initial 53-man roster, but that group should change relatively quickly. Shortly after their final cuts were made, the club announced free safety Jimmie Ward and linebacker Curtis Robinson would go on short-term IR. Tight end Tyler Kroft and defensive end Jordan Willis both have agreements to return to the club after being released from the 80-man roster.
Ward is dealing with a hamstring injury, and Robinson suffered a high ankle sprain in the preseason finale vs. the Texans. Both players will be required to miss at least four games by going on IR.
