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Marcel Granollers of Spain (front) against Philipp Kohlschreiber of Germany under closed roof during the ATP Tournament in Halle, Germany, on June 15, 2016. / AFP / CARMEN JASPERSEN (Photo credit should read CARMEN JASPERSEN/AFP/Getty Images)

Marcel Granollers of Spain (front) against Philipp Kohlschreiber of Germany under closed roof during the ATP Tournament in Halle, Germany, on June 15, 2016.   / AFP / CARMEN JASPERSEN        (Photo credit should read CARMEN JASPERSEN/AFP/Getty Images)