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SAINT PETERSBURG, RUSSIA - FEBRUARY 25: Head coach Juergen Klopp of Dortmund celebrates with Robert Lewandowski after the UEFA Champions League Round of 16 match between FC Zenit and Borussia Dortmund at Petrovsky Stadium on February 25, 2014 in Saint Petersburg, Russia. (Photo by Alex Grimm/Bongarts/Getty Images)

SAINT PETERSBURG, RUSSIA - FEBRUARY 25:  Head coach Juergen Klopp of Dortmund celebrates with Robert Lewandowski after the UEFA Champions League Round of 16 match between FC Zenit and Borussia Dortmund at Petrovsky Stadium on February 25, 2014 in Saint Petersburg, Russia.  (Photo by Alex Grimm/Bongarts/Getty Images)