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08/05/09 2:27 AM ET

Castillo sprains left ankle on steps

Second baseman's unlucky fall results in Mets' latest injury

NEW YORK -- A seemingly freak accident may have cost the Mets another player. Second baseman Luis Castillo was carried from the dugout to the clubhouse in the seventh inning on Tuesday night after he fell down the dugout steps and sprained his left ankle. The club didn't announce how serious the injury was, though X-rays were negative.

Castillo had grounded out with the Mets leading the Cardinals, 7-4, in a game they'd eventually lose, 12-7, in extras. He returned to the dugout and appeared to fall after he had reached the lower steps. He was immediately tended to by trainer Ray Ramirez.

Marty Noble is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.