Czech Republic's Jiri Lehecka poses with his trophy after the final match against USA's Reilly Opelka at the Brisbane International in Brisbane, Australia.

Czech Republic's Jiri Lehecka, left, and USA's Reilly Opelka, right, pose after their final match at the Brisbane International in Brisbane, Australia.

Czech Republic's Jiri Lehecka, front center, poses after winning the final match against USA's Reilly Opelka at the Brisbane International in Brisbane, Australia.

Czech Republic's Jiri Lehecka celebrates his win against USA's Reilly Opelka during their final match at the Brisbane International in Brisbane, Australia.

USA's Reilly Opelka retires injured during his final match against Czech Republic's Jiri Lehecka at the Brisbane International in Brisbane, Australia.

Czech Republic's Jiri Lehecka plays a forehand against USA's Reilly Opelka during their final match at the Brisbane International in Brisbane, Australia.

USA's Reilly Opelka plays a backhand against Czech Republic's Jiri Lehecka during their final match at the Brisbane International in Brisbane, Australia.