AUGSBURG, Germany - The defending champion United States surrendered a late goal and then fell on penalties to Nigeria, while Mexico was beaten 3-1 by South Korea on Sunday to eliminate both CONCACAF sides from the Under-20 Women's World Cup.

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It was the first time the two-time champion United States had failed to make at least the semifinals in five tries at the U-20 Women's World Cup. The match marked Mexico's first appearance in the quarterfinals.

The United States appeared headed to the final four again, taking the lead in the ninth minute on a goal by Amber Brooks, who turned in a square ball across from Kristie Mewis.

The Americans clearly had the better of play in the first half and Nigeria was forced to out-foul the United States in the match 26-5, earning four yellow cards in the process.

Nigeria was able to regroup in the second half and equalized in the 79th minute when Helen Ukaonu ran on to a rolled free kick and beat U.S. keeper Bianca Henninger, who allowed only her second goal in four games.

After a goalless extra time, Nigerian keeper Alaba Jonathan saved Christine Nairn's penalty attempt, and Sidney Leroux - who was among the leaders with five goals in four games - shot wide on her try, helping seal the Africans' 4-2 shootout victory.

"At the end of the day we should have put our chances away in the first half and my heart goes out to the players," U.S. coach Jill Ellis said.

In Dresden, Lee Hyun-young and Ji So-yun scored first-half goals to put South Korea ahead and end Mexico's most successful trip to the Under-20 Women's World Cup.

Lee added another goal in the second half before Natalia Gomez replied for Mexico in the 83rd.

Mexico out-shot South Korea nearly 2-to-1, but put only two of its 14 chances on goal.
"The South Koreans scored early on and that made it an uphill task for us right from the start," Mexico coach Roberto Medina said. "Their finishing was better than ours and that was the key to the game, though we kept trying to go forward and gave it our all out there."