The Americans have been competitive and combative in London, beating Argentina 1-0 and taking Australia to the wire before losing 0-1.
"They're a really physical, aggressive team," said Krystal Forgesson. "They play Argentina a lot, so for them to beat them was almost expected. It's like us and Australia. All the teams in our pool can beat each other; that's the beauty of it."
Aggressiveness was something that was lacking for the first half against Argentina, as they seemed content to sit back and soak up pressure, rather than take the game to the world's No2-ranked side. "We were a bit apprehensive at times and the score reflected that," Cathryn Finlayson said.
"We weren't really playing our style but at halftime we had a bit of a rark-up. We went back to our normal style of hockey, being a bit more attacking and having that aggressiveness, which we were lacking."
The return of midfielder Emily Naylor should add some starch. Naylor was set to play her 200th international but was withdrawn on the afternoon of the match with a back injury. Hager said the decision was more a precautionary measure.
Argentina scored an early, soft goal to Carla Rebecchi after a rare error by captain Kayla Sharland.
Midway through the second half Finlayson made a superb run into the circle but gave the keeper too easy a save with her first shot, then fluffed the rebound.
She then could only watch in horror as Argentina counterattacked and Rebecchi scored again.
The Black Sticks pulled one back through Charlotte Harrison and were finishing the stronger side, but ran out of time.