With Werder Bremen, Mertesacker has won a DFB-Pokal title and finished runner-up in the 2008–09 UEFA Cup. With his quiet-but-effective game, he established himself as Germany's first choice centre-back. Prior to playing at senior level, he played at the under-20 and under-21 levels. In September 2004, Jürgen Klinsmann, then-manager of the German senior team, called Mertesacker up to 9 October 2004 game against Iran.
He made his debut less than two weeks after his 20th birthday when he came on as a second-half substitute for Christian Wörns. Over the course of his final two seasons at Bremen, the defender received just one yellow card in 63 league matches. He has participated in the 2006, 2010 and 2014 FIFA World Cups and the UEFA Euros in 2008 and 2012. In 2006, the defender established the 'Per Mertesacker Stiftung', a charitable foundation that helps support amateur sportsmen and the poor. Description provided by Wikipedia
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