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BERLIN, GERMANY - MARCH 31: Julian Nagelsmann of Hoffenheim talks to ball boy Elias prior to the Bundesliga match between Hertha BSC and TSG 1899 Hoffenheim at Olympiastadion on March 31, 2017 in Berlin, Germany. (Photo by Maja Hitij/Bongarts/Getty Images)

BERLIN, GERMANY - MARCH 31: Julian Nagelsmann of Hoffenheim talks to ball boy Elias prior to the Bundesliga match between Hertha BSC and TSG 1899 Hoffenheim at Olympiastadion on March 31, 2017 in Berlin, Germany. (Photo by Maja Hitij/Bongarts/Getty Images)