FILE - In this April 8, 2013, file photo, Canada's Hayley Wickenheiser, center, attempts to score on Russia's Anna Prugova as Svetlana Tkachyova defends during the first period of their semifinal game in the women's world hockey championship in Ottawa, Ontario. Since women's ice hockey became an Olympic sport in Nagano in 1998, the Canada and the United States have dominated the podium, winning every gold medal and all but one of the silvers. (AP Photo/The Canadian Press, Sean Kilpatrick, File)