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MELBOURNE, AUSTRALIA - FEBRUARY 02: Zdenek Kolar of Czech Republic plays a forehand after the official draw during a practice session ahead of the Davis Cup World Group First Round tie between Australia and Czech Republic at Kooyong on February 2, 2017 in Melbourne, Australia. (Photo by Robert Prezioso/Getty Images)

MELBOURNE, AUSTRALIA - FEBRUARY 02:  Zdenek Kolar of Czech Republic plays a forehand after the official draw during a practice session ahead of the Davis Cup World Group First Round tie between Australia and Czech Republic at Kooyong on February 2, 2017 in Melbourne, Australia.  (Photo by Robert Prezioso/Getty Images)