PHOENIX -- Ranges catcher Jarrod Saltalamacchia was scratched from Tuesday's starting lineup against Oakland because of soreness around the surgical site near his right shoulder.

The Rangers believe the discomfort is being caused by the loosening of scar tissue, and the condition is not serious. The catcher, who had surgery for thoracic outlet syndrome in September, will be reevaluated on Wednesday.

"From my understanding it's by his ribs," Rangers general manager Jon Daniels said on Tuesday. "He made a snap throw down to first base yesterday in the 'B' game. He wanted to play today. But we want to play it safe with him. There's no sense in pushing him."

The Rangers are concerned with their catching depth. Saltalamacchia and Taylor Teagarden are currently splitting time behind the plate. Kevin Richardson and Toby Hall, who is still recovering from shoulder surgery, are the other backstops in camp.

"We were interested in adding to that before camp, but it never materialized," Daniels said. "We like the guys we have who we think will make the club, but it's not an area where we have a lot of considerable depth behind us."