With North Korea slumping to 2-1 defeat at the hands of Sweden in the group's other game, the Americans finished in first place with seven points.

North Korea progress after taking second spot ahead of Sweden. Though they both finished on four points, the Asian side go through on goal difference.

The USA far from dominated Nigeria at the Hongkou Football stadium, but for all their possession the African side rarely troubled USA goalkeeper Hope Solo.

The only goal of the game came almost straight from the kick-off when a long throw into the Nigeria box was headed on into the path of Lori Chalupny and the midfielder stabbed home from close range.

The USA will face Group A runners-up England in the last eight on Saturday.

In Tianjin, North Korea booked their place in the next round despite their defeat, with the Swede's failing to claw back their inferior goal difference.

Needing to win by three clear goals, the Swedes made an ideal start when Charlotta Schelin fired home with just four minutes on the clock.

But North Korea hit back in the 22nd minute and equalised with their first shot on target through Ri Un Suk.

Although Sweden regained the lead nine minutes into the second period through Schelin, they were unable to add further goals and bowed out in agonising fashion.

North Korea will play defending champions Germany in the quarter-final.