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Nigeria's player Oghenekaro Etebo (8) celebrates the team's third goal against Japan during the Rio 2016 Olympic Games mens First Round Group B football match Nigeria vs Japan, at the Amazonia Arena in Manaus on August 4, 2016. / AFP / RAPHAEL ALVES (Photo credit should read RAPHAEL ALVES/AFP/Getty Images)

Nigeria's player Oghenekaro Etebo (8) celebrates the team's third goal against Japan during the Rio 2016 Olympic Games mens First Round Group B football match Nigeria vs Japan, at the Amazonia Arena in Manaus on August 4, 2016. / AFP / RAPHAEL ALVES        (Photo credit should read RAPHAEL ALVES/AFP/Getty Images)