Argentina beat El Salvador 2-0 in an international friendly in Washington . But Kazakhstan 's anthem was played at ground instead of El Salvador 's . Players and fans were left bemused by the bizarre error at FedEx Field .
Argentina beat El Salvador 2-0 in an international friendly in Washington . But Kazakhstan 's anthem was played at ground instead of El Salvador 's . Players and fans were left bemused by the bizarre error at the FedEx Field .