Referees and players are seen in the tunnel

[FIFA]

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CUIABA, BRAZIL - JUNE 21:  Referees and players are seen in the tunnel prior to the 2014 FIFA World Cup Brazil Group F match between Nigeria and Bosnia-Herzegovina at Arena Pantanal on June 21, 2014 in Cuiaba, Brazil.  (Photo by Clive Mason - FIFA/FIFA via Getty Images)