Castro replaced an injured Martin Maldonado (shoulder) during Wednesday's 7-0 loss to Tampa Bay.

Maldonado injured his left shoulder while making a diving catch off a bunt attempt to end the fourth inning. He stayed in the game to play defense in the fifth but was removed to start the sixth when he was scheduled to bat. Castro, who singled in two at-bats, will start if Maldonado is deemed unavailable for Thursday's series finale.

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