Astros first baseman Jeff Bagwell will have surgery Tuesday on his arthritic right shoulder and may be out for the rest of the season. The rehabilitation is expected to last three months, putting his return this year in doubt. "There's a possibility if everything goes right," Bagwell said. "But to go ahead to try to push myself and hurt myself again, then I'm not going to do it. We've got to figure out where we are in September, where I'm at, then we'll make the decision."