Michael Toglia hit his third home run in two games, German Marquez pitched 5 2/3 scoreless innings and the visiting Colorado Rockies sent the Washington Nationals to their 11th consecutive loss, 3-1 on Wednesday night. Jordan Beck had two hits including a homer for the Rockies, who have won four straight for the first time this season. Marquez (3-8) allowed six hits, struck out two and walked two.