Hamburg

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Germany's Max Meyer, right, and Poland's Pawel Olkowski, left, challenge for the ball during a friendly soccer match between Germany and Poland in Hamburg, Germany, Tuesday, May 13, 2014. (AP Photo/Michael Sohn)

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Germany's Christoph Kramer, left, and Poland's Thiago Cionek, right, challenge for the ball during a friendly soccer match between Germany and Poland in Hamburg, Germany, Tuesday, May 13, 2014. (AP Photo/Michael Sohn)

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Germany's Andre Hahn, right, teammate Germany's Benedikt Hoewedes, background left, and Poland's Maciej Rybus challenge for the ball during a friendly soccer match between Germany and Poland in Hamburg, Germany, Tuesday, May 13, 2014. (AP Photo/Matthias Schrader)

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Germany's Christoph Kramer, from left, Germany's Antonio Ruediger and Poland's Marcin Robak challenge for the ball during a friendly soccer match between Germany and Poland in Hamburg, Germany, Tuesday, May 13, 2014. (AP Photo/Matthias Schrader)

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German head coach Joachim Loew arrives for a friendly soccer match between Germany and Poland in Hamburg, Germany, Tuesday, May 13, 2014. (AP Photo/Matthias Schrader)

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Germany's Shkodran Mustafi, right, and Poland's Ludovic Obraniak, left, challenge for the ball during a friendly soccer match between Germany and Poland in Hamburg, Germany, Tuesday, May 13, 2014. (AP Photo/Michael Sohn)

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Germany's Leon Goretzka goes for a header during a friendly soccer match between Germany and Poland in Hamburg, Germany, Tuesday, May 13, 2014. (AP Photo/Michael Sohn)