USA remain top of Group D of the Women's World Cup despite being held to a goalless draw by Sweden in Winnipeg.
Swedish goalkeeper Hedvig Lindahl made a string of fine stops, saving a late header from USA captain Abby Wambach.
At the other end, Sweden went close as Meghan Klingenberg cleared Caroline Seger's effort from under the bar.
Fabienne Humm hit the fastest hat-trick in tournament history as Switzerland beat Ecuador 10-1, equalling the event record for most goals in a match.
She struck between the 47th and 52nd minutes for the Swiss, who are joint second with Cameroon in Group C.
Ramona Bachmann also scored three times for Switzerland, while there was a hat-trick of sorts for Ecuador's Angie Ponce - who was credited with two own goals, but also scored Ecuador's consolation from the penalty spot.
Aya Sameshima and Yuika Sugasawa scored early goals as defending champions Japan beat Cameroon 2-1.
Cameroon pulled a goal back through Ajara Nchout in the 90th minute and had chances in the final stages, but Japan held on to maintain their 100% record with two wins from two.
In Tuesday's final Group D games, USA play bottom side Nigeria and the Swedes meet second-placed Australia.
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