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MADRID, SPAIN - MAY 07: Simona Halep of Romania in action against Kristyna Pliskova of Czech Republic during day two of the Mutua Madrid Open tennis at La Caja Magica on May 7, 2017 in Madrid, Spain. (Photo by Julian Finney/Getty Images)

MADRID, SPAIN - MAY 07:  Simona Halep of Romania in action against Kristyna Pliskova of Czech Republic during day two of the Mutua Madrid Open tennis at La Caja Magica on May 7, 2017 in Madrid, Spain.  (Photo by Julian Finney/Getty Images)

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MADRID, SPAIN - MAY 07: Simona Halep of Romania in action against Kristyna Pliskova of Czech Republic during day two of the Mutua Madrid Open tennis at La Caja Magica on May 7, 2017 in Madrid, Spain. (Photo by Julian Finney/Getty Images)

MADRID, SPAIN - MAY 07:  Simona Halep of Romania in action against Kristyna Pliskova of Czech Republic during day two of the Mutua Madrid Open tennis at La Caja Magica on May 7, 2017 in Madrid, Spain.  (Photo by Julian Finney/Getty Images)

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MADRID, SPAIN - MAY 07: Simona Halep of Romania in action against Kristyna Pliskova of Czech Republic during day two of the Mutua Madrid Open tennis at La Caja Magica on May 7, 2017 in Madrid, Spain. (Photo by Julian Finney/Getty Images)

MADRID, SPAIN - MAY 07:  Simona Halep of Romania in action against Kristyna Pliskova of Czech Republic during day two of the Mutua Madrid Open tennis at La Caja Magica on May 7, 2017 in Madrid, Spain.  (Photo by Julian Finney/Getty Images)

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MADRID, SPAIN - MAY 07: Simona Halep of Romania in action against Kristyna Pliskova of Czech Republic during day two of the Mutua Madrid Open tennis at La Caja Magica on May 7, 2017 in Madrid, Spain. (Photo by Julian Finney/Getty Images)

MADRID, SPAIN - MAY 07:  Simona Halep of Romania in action against Kristyna Pliskova of Czech Republic during day two of the Mutua Madrid Open tennis at La Caja Magica on May 7, 2017 in Madrid, Spain.  (Photo by Julian Finney/Getty Images)