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BRISBANE, AUSTRALIA - JANUARY 05: Radek Stepanek of Czech Republic serves in his match against Dusan Lajovic of Serbia during day three of the 2016 Brisbane International at Pat Rafter Arena on January 5, 2016 in Brisbane, Australia. (Photo by Matt Roberts/Getty Images)

BRISBANE, AUSTRALIA - JANUARY 05: Radek Stepanek of Czech Republic serves in his match against Dusan Lajovic of Serbia during day three of the 2016 Brisbane International at Pat Rafter Arena on January 5, 2016 in Brisbane, Australia.  (Photo by Matt Roberts/Getty Images)