HERNING, Denmark—The United States routed Japan 10–0 in the opening game of the women’s hockey world championship on Thursday and defending champion Canada started the tournament with a 4–1 victory over Finland.
The Americans had nine different scorers against Japan, with Alex Carpenter the only player to net twice. Taylor Heise went scoreless but equaled a tournament record with five assists for the United States, which led 9–0 after two periods and outshot Japan 62–6.





