SANTA CLARA, Calif. -- The diagnosis of San Francisco 49ers nose tackle Glenn Dorsey's right hamstring injury may be good.San Francisco defensive coordinator Vic Fangio told radio station KNBR, "We don't think [the injury] is as bad as initially feared." Fangio added the 49ers will not know Dorsey's status for Sunday's game until later in the week.Dorsey said Sunday he thought he'd be OK. He left the game in the first quarter after he suffered the injury.