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Nigeria's head coach Gernot Rohr (L) reacts during a group D match between Croatia and Nigeria at the 2018 FIFA World Cup in Kaliningrad, Russia, June 16, 2018. (Xinhua/Chen Cheng)

Nigeria's head coach Gernot Rohr (L) reacts during a group D match between Croatia and Nigeria at the 2018 FIFA World Cup in Kaliningrad, Russia, June 16, 2018. (Xinhua/Chen Cheng)