Mets first baseman Jared Young was carted off the field  in the sixth inning of a 3-0 loss to Philadelphia after he was knocked out when struck on the head by a knee of pitcher Nolan McLean as the two converged on Justin Crawford’s slow grounder. New York manager Andy Green said a CT scan at a hospital was negative and Young had concussion symptoms and full use of his extremities. With the Phillies ahead 1-0, McLean broke to first on contact and Young initially moved back toward the bag. McLean briefly paused, at which point Young reached for the ball with his right hand as he tried to keep a foot on the base.