Nigeria

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Argentina's Lionel Messi celebrates scoring his side's second goal during the group F World Cup soccer match between Nigeria and Argentina at the Estadio Beira-Rio in Porto Alegre, Brazil, Wednesday, June 25, 2014. (AP Photo/Fernando Vergara)

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U.S. men's soccer team goalkeeper Tim Howard scrimmages during a public training session at EverBank Field in Jacksonville, Fla., Friday, June 6, 2014 before Saturday's friendly match against Nigeria ahead of the World Cup Championship. (AP Photo/The Florida Times-Union, Gary McCullough)

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United States head coach Jurgen Klinsmann yells out to players during the first half of an international friendly soccer match between the United States and Nigeria in Jacksonville, Fla., Saturday, June 7, 2014. (AP Photo/John Raoux)

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United States's Kyle Beckerman (15), Brad Davis, second from left, and other team members applaud fans as the come off the field after defeating Nigeria 2-1 in an international friendly soccer match in Jacksonville, Fla., Saturday, June 7, 2014. (AP Photo/John Raoux)

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Nigeria's Michael Uchebo, centre celebrates with Azubuike Egwueke, left, and Joseph Yobo, right, after he scored a goal during the international friendly soccer match between Nigeria and Scotland at Craven Cottage Stadium in London, Wednesday, May 28, 2014. Nigeria will be in Group F in the upcoming World Cup in Brazil. (AP Photo/Kirsty Wigglesworth)

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Nigeria's Uche Nwofor, centre, celebrates with team mates after he scores a goal during the international friendly soccer match between Nigeria and Scotland at Craven Cottage Stadium in London, Wednesday, May 28, 2014. (AP Photo/Kirsty Wigglesworth)

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Nigeria's Reuben Gabriel, left, competes for the ball with Scotland's Ikechi Anya during the international friendly soccer match between Nigeria and Scotland at Craven Cottage Stadium in London, Wednesday, May 28, 2014. Nigeria will be in Group F in the upcoming World Cup in Brazil. (AP Photo/Kirsty Wigglesworth)