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Hoffenheim's head coach Julian Nagelsmann reacts during the German first division Bundesliga football match of 1.FC Cologne vs TSG Hoffenheim in Cologne, western Germany, on April 21, 2017. / AFP PHOTO / PATRIK STOLLARZ (Photo credit should read PATRIK STOLLARZ/AFP/Getty Images)

Hoffenheim's head coach Julian Nagelsmann reacts during the German first division Bundesliga football match of 1.FC Cologne vs TSG Hoffenheim in Cologne, western Germany, on April 21, 2017. / AFP PHOTO / PATRIK STOLLARZ        (Photo credit should read PATRIK STOLLARZ/AFP/Getty Images)