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PARIS, FRANCE - MAY 31: David Goffin of Belgium plays a forehand during the mens singles second round match against Sergiy Stakhovsky of Ukraine on day four of the 2017 French Open at Roland Garros on May 31, 2017 in Paris, France. (Photo by Clive Brunskill/Getty Images)

PARIS, FRANCE - MAY 31:  David Goffin of Belgium plays a forehand during the mens singles second round match against Sergiy Stakhovsky of Ukraine on day four of the 2017 French Open at Roland Garros on May 31, 2017 in Paris, France.  (Photo by Clive Brunskill/Getty Images)