Christian McCaffrey is currently dealing with Achilles tendonitis and remains on injured reserve. Reports suggest that he may be able to run on hard ground soon, with a potential return by early November. Meanwhile, Jordan Mason is expected to lead the 49ers' backfield during McCaffrey's absence. The situation has become more serious as there is consideration for placing McCaffrey on short-term IR, which would require him to miss at least four games.

• McCaffrey's return is uncertain but could be as soon as early November.
• Jordan Mason will take over the lead role in the 49ers' backfield.