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Head coach Mladen Krstajic of Serbia reacts during a group E match between Costa Rica and Serbia at the 2018 FIFA World Cup in Samara, Russia, June 17, 2018. (Xinhua/Fei Maohua)
Head coach Mladen Krstajic of Serbia reacts during a group E match between Costa Rica and Serbia at the 2018 FIFA World Cup in Samara, Russia, June 17, 2018. (Xinhua/Fei Maohua)