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MELBOURNE, AUSTRALIA - JANUARY 26: Petra Kvitova of the Czech Republic celebrates winning the second set in her Women's Singles Final match against Naomi Osaka of Japan during day 13 of the 2019 Australian Open at Melbourne Park on January 26, 2019 in Melbourne, Australia. (Photo by Mark Kolbe/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 26:  Petra Kvitova of the Czech Republic celebrates winning the second set in her Women's Singles Final match against Naomi Osaka of Japan during day 13 of the 2019 Australian Open at Melbourne Park on January 26, 2019 in Melbourne, Australia.  (Photo by Mark Kolbe/Getty Images)