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MELBOURNE, AUSTRALIA - JANUARY 15: Jan-Lennard Struff of Germany plays a backhand in his match against Radek Stepanek of the Czech Republic during round two of 2016 Australian Open Qualifying at Melbourne Park on January 15, 2016 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 15:  Jan-Lennard Struff of Germany plays a backhand in his match against Radek Stepanek of the Czech Republic during round two of 2016 Australian Open Qualifying at Melbourne Park on January 15, 2016 in Melbourne, Australia.  (Photo by Scott Barbour/Getty Images)