By Paul Hirst, Press Association Per Mertesacker thinks Germany will lose the World Cup final if they do not perform to the exact same standard as they did against Brazil. Germany pulled off one of the biggest shocks in the history of football when they hammered Brazil 7-1 in the semi-finals last week. The comprehensive nature of the win means Germany will go into Sunday's final against Argentina as big favourites, but Mertesacker has warned against the idea that Germany should already be regarded as world champions before the first whistle. VIDEO Scroll down to watch Philipp Lahm and Thomas Muller talk ahead of the final
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Per Mertesacker says Germany will lose if they let their standards slip
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Arsenal defender says Germany must play Argentina the way they did against Brazil
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Mertesacker says Germany must not settle for second best
'We must stay focused and play the same way that we did against Brazil, otherwise we have no chance,' the @placeholder defender said.