Getty Jordan James warms up prior to the 2024 Big Ten Football Championship on December 07, 2024. The running back room looks a lot different for the San Francisco 49ers in 2025.    Behind superstar Christian McCaffrey , the 49ers have a lot of unproven guys after Elijah Mitchell and Jordan Mason departed in free agency.  On paper, the 49ers run game could be in real trouble if McCaffrey gets hurt again like he did in 2024.  But expert NFL scout Brent Sobleski believes that everyone is