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PARIS, FRANCE - JUNE 08: Karolina Pliskova of Czech Republic serves during the women's singles semi finals match against Simona Halep of Romania on day twelve of the 2017 French Open at Roland Garros on June 8, 2017 in Paris, France. (Photo by Aurelien Meunier/Getty Images)

PARIS, FRANCE - JUNE 08:  Karolina Pliskova of Czech Republic serves during the women's singles semi finals match against Simona Halep of Romania on day twelve of the 2017 French Open at Roland Garros on June 8, 2017 in Paris, France.  (Photo by Aurelien Meunier/Getty Images)

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PARIS, FRANCE - JUNE 08: Karolina Pliskova of Czech Republic serves during the women's singles semi finals match against Simona Halep of Romania on day twelve of the 2017 French Open at Roland Garros on June 8, 2017 in Paris, France. (Photo by Aurelien Meunier/Getty Images)

PARIS, FRANCE - JUNE 08:  Karolina Pliskova of Czech Republic serves during the women's singles semi finals match against Simona Halep of Romania on day twelve of the 2017 French Open at Roland Garros on June 8, 2017 in Paris, France.  (Photo by Aurelien Meunier/Getty Images)

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PARIS, FRANCE - JUNE 08: Karolina Pliskova of Czech Republic reacts during her match with Simona Halep of Romania, during day twelve at Roland Garros on June 8, 2017 in Paris, France. (Photo by Ian MacNicol/Getty Images)

PARIS, FRANCE - JUNE 08: Karolina Pliskova of Czech Republic reacts during her match with Simona Halep of Romania, during day twelve at Roland Garros on June 8, 2017 in Paris, France. (Photo by Ian MacNicol/Getty Images)

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PARIS, FRANCE - JUNE 08: Karolina Pliskova of The Czech Republic looks dejected during ladies singles semi-final match against Simona Halep of Romania on day twelve of the 2017 French Open at Roland Garros on June 8, 2017 in Paris, France. (Photo by Clive Brunskill/Getty Images)

PARIS, FRANCE - JUNE 08:  Karolina Pliskova of The Czech Republic looks dejected during ladies singles semi-final match against Simona Halep of Romania on day twelve of the 2017 French Open at Roland Garros on June 8, 2017 in Paris, France.  (Photo by Clive Brunskill/Getty Images)

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PARIS, FRANCE - JUNE 08: Karolina Pliskova of The Czech Republic looks dejected during ladies singles semi-final match against Simona Halep of Romania on day twelve of the 2017 French Open at Roland Garros on June 8, 2017 in Paris, France. (Photo by Adam Pretty/Getty Images)

PARIS, FRANCE - JUNE 08:  Karolina Pliskova of The Czech Republic looks dejected during ladies singles semi-final match against Simona Halep of Romania on day twelve of the 2017 French Open at Roland Garros on June 8, 2017 in Paris, France.  (Photo by Adam Pretty/Getty Images)