Mason comes through in McCaffrey's absence Christian mcaffrey s appearance on the inactive list came as a bit of a surprise as he'd been listed as questionable with a carf and achilles ailment prior to Monday and left many wondering how the 49ers might a just without him against a Jets team known for having a stingy defense in the end we shouldn't have worried at all because if there's any coach who will maximize production from lesser known running backs it's Kyle Shanahan who inserted Jordan Mason into his offense and watched him flourish Mason finished with 147 yards and a touchdown on 28 carries powering a 49ers offence that rode the ground game to a dominant advantage in time of possession 38 colon 40 to 2120 and peppered New York's defense with a collection of Brock 30 passes to six different targets make no mistake the star of the night