The Giants notched another walk-off winFriday night. But, in the process, they saw another importantplayer helped off the field because of a serious injury. Just when it looked as if their health situation was about toimprove significantly, Freddy Sanchez was added to the Giants' already crowded 2011casualty list with a right-shoulder dislocation suffered during a3-2 victory over Cincinnati at AT&T Park. The club's standout second baseman dived for a Brandon Phillipsgrounder up the middle leading off the fifth inning, and althoughSanchez managed to glove the ball, it was clear from the moment hehit the ground that something was wrong.