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BRISBANE, AUSTRALIA - JANUARY 07: Bethanie Mattek-Sands of the USA celebrates after being announced as the number one Women's Doubles player in the world after her match with Sania Mirza of India against Ekaterina Makarova and Elena Vesnina of Russia after the Women's Doubles Final on day seven of the 2017 Brisbane International at Pat Rafter Arena on January 7, 2017 in Brisbane, Australia. (Photo by Chris Hyde/Getty Images)

BRISBANE, AUSTRALIA - JANUARY 07:  Bethanie Mattek-Sands of the USA celebrates after being announced as the number one Women's Doubles player in the world after her match with Sania Mirza of India against Ekaterina Makarova and Elena Vesnina of Russia after the Women's Doubles Final on day seven of the 2017 Brisbane International at Pat Rafter Arena on January 7, 2017 in Brisbane, Australia.  (Photo by Chris Hyde/Getty Images)

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BRISBANE, AUSTRALIA - JANUARY 07: Bethanie Mattek-Sands of the USA celebrates winning the Women's Doubles Final with Sania Mirza of India against Ekaterina Makarova of Russia and Elena Vesnina of Russia during on day seven of the 2017 Brisbane International at Pat Rafter Arena on January 7, 2017 in Brisbane, Australia.s (Photo by Chris Hyde/Getty Images)

BRISBANE, AUSTRALIA - JANUARY 07:  Bethanie Mattek-Sands of the USA celebrates winning the Women's Doubles Final with Sania Mirza of India against Ekaterina Makarova of Russia and Elena Vesnina of Russia during on day seven of the 2017 Brisbane International at Pat Rafter Arena on January 7, 2017 in Brisbane, Australia.s  (Photo by Chris Hyde/Getty Images)

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BRISBANE, AUSTRALIA - JANUARY 07: Bethanie Mattek-Sands of the USA plays a forehand in the Women's Doubles Final with Sania Mirza of India against Ekaterina Makarova of Russia and Elena Vesnina of Russia during on day seven of the 2017 Brisbane International at Pat Rafter Arena on January 7, 2017 in Brisbane, Australia.s (Photo by Chris Hyde/Getty Images)

BRISBANE, AUSTRALIA - JANUARY 07:  Bethanie Mattek-Sands of the USA plays a forehand in the Women's Doubles Final with Sania Mirza of India against Ekaterina Makarova of Russia and Elena Vesnina of Russia during on day seven of the 2017 Brisbane International at Pat Rafter Arena on January 7, 2017 in Brisbane, Australia.s  (Photo by Chris Hyde/Getty Images)

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BRISBANE, AUSTRALIA - JANUARY 07: Sania Mirza of India and Bethanie Mattek-Sands of the USA in action during the Women's Doubles Final against Ekaterina Makarova of Russia and Elena Vesnina of Russia during on day seven of the 2017 Brisbane International at Pat Rafter Arena on January 7, 2017 in Brisbane, Australia. (Photo by Chris Hyde/Getty Images)

BRISBANE, AUSTRALIA - JANUARY 07:  Sania Mirza of India and Bethanie Mattek-Sands of the USA in action during the Women's Doubles Final against Ekaterina Makarova of Russia and Elena Vesnina of Russia during on day seven of the 2017 Brisbane International at Pat Rafter Arena on January 7, 2017 in Brisbane, Australia.  (Photo by Chris Hyde/Getty Images)

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BRISBANE, AUSTRALIA - JANUARY 07: Bethanie Mattek-Sands of the USA and Sania Mirza of India celebrate victory after their match against Ekaterina Makarova and Elena Vesnina of Russia after the Women's Doubles Final on day seven of the 2017 Brisbane International at Pat Rafter Arena on January 7, 2017 in Brisbane, Australia. (Photo by Bradley Kanaris/Getty Images)

BRISBANE, AUSTRALIA - JANUARY 07:  Bethanie Mattek-Sands of the USA and Sania Mirza of India celebrate victory after their match against Ekaterina Makarova and Elena Vesnina of Russia after the Women's Doubles Final on day seven of the 2017 Brisbane International at Pat Rafter Arena on January 7, 2017 in Brisbane, Australia.  (Photo by Bradley Kanaris/Getty Images)