Sydney Mclaughlin, front, completes a win for the United States in the women’s 4x400-meter relay final at the world track and field championships Sunday in Eugene. It was the 13th gold medal for the U.S. in the world finals, one shy of the record for the Americans. ASHLEY LANDIS/AP
By Eddie Pells AP National Writer EUGENE, Ore. — It only made sense that Sydney McLaughlin would run the last, victorious lap of world championships…
