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Eric Chavez rejoined the A's today and said he's not sure if he'll be able to play again this season.

"I basically have a week or two to see whether I'm going to play again this year or not," Chavez said.

Chavez has been out with a sore right shoulder since early July. He was in San Diego doing rehab for three weeks, and he rejoined the A's to resume some light baseball activity today, with the idea of finding out just what he can do.

Chavez said right now it's possible he'd miss the rest of the season, possible he'd undergo surgery, and possible this injury could linger into 2009.

"I'm just dealing with a really bad shoulder," Chavez said. "There are a lot of things that are going on."

Look for more in Saturday's Press Democrat.

In other A's injury news, Frank Thomas ran for the first time since he was placed on the disabled list. Thomas said he felt some discomfort, which is to be expected, and he'll have a better idea of his status by Sunday.

Joey Devine threw a simulated game. He is scheduled to make his first minor league rehab start on Monday.