Christian McCaffrey of the San Francisco 49ers has been placed on injured reserve due to Achilles tendinitis and is expected to miss at least six weeks. This injury will keep him out of the next four games, with the possibility of extending beyond that. Jordan Mason is expected to take on a significant workload in McCaffrey's absence.
- McCaffrey's injury is serious and will require a lengthy recovery.
- Jordan Mason is set to be the primary running back for the 49ers during McCaffrey's absence.