Looking ahead to the U.S. vs. Japan in the World Cup finalJeff Carlisle, U.S. soccer correspondentJul 2, 2015, 06:51 AM ETCloseJeff Carlisle covers MLS and the U.S. national team for ESPN FC.EmailPrintJapan and the U.S. women will meet in the final for the second consecutive World Cup. What are the key matchups on the field? What X factors could decide Sunday's championship?Read more at espnW.