49ers RB Jordan Mason returns to action after a shoulder injury, then exits again

With Christian McCaffrey out, Jordan Mason was a revelation. He has been one of the NFL's best running backs.

Can the San Francisco 49ers get similar production out of their third running back on the depth chart? They had to wonder for a while on Thursday night.

Mason was off to a good start on Thursday night when he was tackled and immediately grabbed at his shoulder area in a game against the Seattle Seahawks. He stayed down for a while while athletic trainers tended to him. Mason went back to the locker room and the 49ers said he was questionable to return with a shoulder injury.

The good news was that Mason returned for the second half, though he went to the sideline after just one carry and was moving his injured arm to get loose. Isaac Guerendo came in when Mason exited, and Patrick Taylor Jr. came in on the 49ers' first drive of the second half when Guerendo needed a rest. Mason didn't come back for the rest of that drive after getting in just one play. Mason didn't return for the rest of the third quarter.

With Christian McCaffrey out, Jordan Mason was a revelation. He has been one of the NFL's best running backs.

Can the San Francisco 49ers get similar production out of their third running back on the depth chart? They had to wonder for a while on Thursday night.

Mason was off to a good start on Thursday night when he was tackled and immediately grabbed at his shoulder area in a game against the Seattle Seahawks. He stayed down for a while while athletic trainers tended to him. Mason went back to the locker room and the 49ers said he was questionable to return with a shoulder injury.

The good news was that Mason returned for the second half, though he went to the sideline after just one carry and was moving his injured arm to get loose. Isaac Guerendo came in when Mason exited, and Patrick Taylor Jr. came in on the 49ers' first drive of the second half when Guerendo needed a rest. Mason didn't come back for the rest of that drive after getting in just one play. Mason didn't return for the rest of the third quarter.