HALLE, GERMANY - JUNE 19: Philipp Kohlschreiber of Germany plays a volley shot during his match against Joao Sousa of Portugal on Day 3 of the Gerry Weber Open 2017 at on June 19, 2017 in Halle, Germany. (Photo by Lars Baron/Bongarts/Getty Images)
HALLE, GERMANY - JUNE 19: Philipp Kohlschreiber of Germany plays a volley shot during his match against Joao Sousa of Portugal on Day 3 of the Gerry Weber Open 2017 at on June 19, 2017 in Halle, Germany. (Photo by Lars Baron/Bongarts/Getty Images)