Giants catcher Buster Posey is awaiting word of just how serious he is hurt, after he apparently suffered a significant leg injury while blocking home plate in the 12th inning of San Francisco's game Wednesday night. But his agent is not waiting to lobby for change. Posey's agent, Jeff Berry, said Thursday morning he is going to reach out to Joe Torre, leader of on-field operations for MLB, and raise the idea of changing the rules regarding plays at the plate.