Jordan Mason went down with an injury in the first quarter against the Cowboys on Sunday Night Football.
Update: Jordan Mason left the game just before halftime and went into the locker room, per NBC Sports. He's questionable to return.
The San Francisco 49ers have been forced to deal with plenty of injury headaches this season, the most recent of which sent wide receiver Brandon Aiyuk to season-ending injured reserve after tearing both his ACL and MCL in the Week 7 loss to the Kansas City Chiefs.
Already missing All-Pro running back Christian McCaffrey all year long, as he recovers from Achilles issues, the Niners have successfully turned to No. 2 tailback Jordan Mason to shoulder the load.
Entering San Francisco's Week 8 Sunday Night Football showdown against the Dallas Cowboys, Mason boasted the second most rush yards in the NFL with 667.
However, toward the end of the first quarter, Jordan Mason went down after a 6-yard carry and required some attention from the 49ers' training staff.
Jordan Mason injury updates
Mason was able to walk off the field under his own power, which is clearly a good sign.
After the NBC Sports commercial break in the wake of the running back's injury, sideline reporter Melissa Stark pointed out how Mason quickly put on his helmet and appeared to be ready to go after missing a handful of plays.
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Meanwhile, the Niners turned to rookie running back Isaac Guerendo as the fill-in replacement for Mason on a handful of plays.
So far in the game, Mason has 14 yards on three carries prior to the injury.
It appears as if Mason will return to action soon, although one has to hope the injury doesn't wind up lingering or rearing its ugly head later on in the game.