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TOKYO, JAPAN - SEPTEMBER 25: Caroline Wozniacki of Denmark celebrate the winner Naomi Osaka of Japan during women's singles Final match day 7 of the Toray Pan Pacific Open at Ariake Colosseum on September 25, 2016 in Tokyo, Japan. (Photo by Koji Watanabe/Getty Images)

TOKYO, JAPAN - SEPTEMBER 25: Caroline Wozniacki of Denmark celebrate the winner Naomi Osaka of Japan during women's singles Final match day 7 of the Toray Pan Pacific Open at Ariake Colosseum on September 25, 2016 in Tokyo, Japan. (Photo by Koji Watanabe/Getty Images)