PHOENIX -- San Francisco Giants catcher Buster Posey left Friday night's game after taking a foul tip off his mask in the bottom of the second inning.
The Giants announced Posey was removed from the game to be watched for concussion symptoms.
Posey, who had two hits in the game, singled in the third inning and, upon reaching first base, was tended to by a trainer and first base coach Jose Alguacil. Posey took off his helmet and walked to the dugout.
Posey had to gather himself after the blow to his mask the inning before.