49ers-Panthers: Alex Smith Injures Shoulder

San Francisco 49ers quarterback Alex Smith left the field in the first offensive series in the second half.  The injury came on a sack by Carolina Panthers defensive lineman Charles Johnson.  Johnson beat rookie offensive lineman Anthony Davis and got a free hit on Smith who never saw Johnson coming. 

Smith walked off the field with the 49ers trainers to go get x-rays which showed nothing serious but he did not return to the field.  Preliminary reports is that it is a sprained left shoulder.  David Carr came in for Alex Smith and remained in for the rest of the game.  He threw for 67 yards and one interception during that time.

No word yet on how long Smith will be out or if he will be able to play next week.  Right now the 49ers are on their way to London for next week's game against the Denver Broncos.  Smith did say that he will have an MRI in London this week.