Updated

St. Louis Rams head coach Jeff Fisher revealed Friday that offensive tackle Rodger Saffold has a dislocated left shoulder that could sideline him for the remainder of the preseason.

Saffold suffered the injury during the Rams' first offensive series of Thursday's preseason opener against Cleveland.

"We're still doing tests. He's a little sore," said Fisher during Friday's press confernce. "He's going to miss some time. He may miss a preseason game or two."

Saffold is expected to be ready in time when St. Louis begins the regular season against Arizona on September 8.

The 2010 second-round pick is switching to right tackle this year after playing exclusively on the left side over his first three seasons. The Rams signed four-time Pro Bowl selection Jake Long in March to man left tackle.