Four years ago, Japan overcame the United States to capture their first Women's World Cup. Today, they began the true defence of their title. And while they did not impress, they were able to get all three points. We don't know yet whether Switzerland raised their game to meet the level of their opponents. We'll have a better idea after Friday's match with Ecuador. But for now, Group C appears to be wide open. Cameroon have the clear goal advantage thanks to their six nil win over Ecuador, but Japan have three points as well, and Switzerland look quite capable of being one of the third place sides to qualify for the knockout phase.
Read MoreJapanese survive a Swiss surge in Group C
