SAN FRANCISCO (CBS SF) — San Francisco Giants catcher Buster Posey was removed from the team’s home opener Monday after getting hit in the head by a pitch.

Posey was batting in the bottom of the first inning against the Arizona Diamondbacks when he was hit on the right side of the batting helmet on a 94-mph pitch by Taijuan Walker.

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Posey went down immediately and remained on the ground in a seated position as the team trainer and manager Bruce Bochy checked on him.

He was immediately taken out of the game as a precaution, walking off the field unassisted.

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Following the game, a 4-1 win for the Giants, manager Bruce Bochy said Posey was “doing fine” and under observation for a possible concussion.

Posey is the face of the franchise, a four-time All-Star, three-time World Series champion, National League MVP and Rookie of the Year, among his many other awards.

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He was replaced in the game by backup catcher Nick Hundley.