MLB Admits Error in Calling Gwynn Out at Home: A play at the plate in Sunday's Philadelphia Phillies-Miami Marlins game was decided incorrectly, Major League Baseball officials said. Marlins catcher Jeff Mathis illegally blocked the plate before he had the ball on a Tony Gwynn Jr. slide home Sunday (see the video). Gwynn was called out and it was upheld by replay. The Phillies won 4-3. The new rule states, "unless the catcher is in possession of the ball, the catcher cannot block the pathway of the runner as he is attempting to score."