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NUERNBERG, GERMANY - MAY 27: Kiki Bertens of Netherlands celebrates with the trophy after winning the final match against Barbora Krejcikova of Czech Republic at the town's landmark Kaiserburg during the WTA Nuernberger Versicherungscup on May 27, 2017 in Nuernberg, Germany. (Photo by Oliver Hardt/Bongarts/Getty Images)

NUERNBERG, GERMANY - MAY 27:  Kiki Bertens of Netherlands  celebrates with the trophy after winning the final match against  Barbora Krejcikova of Czech Republic at the town's landmark Kaiserburg during the WTA Nuernberger Versicherungscup on May 27, 2017 in Nuernberg, Germany.  (Photo by Oliver Hardt/Bongarts/Getty Images)