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SINGAPORE - OCTOBER 25: Naomi Osaka of Japan holds the winners trophy after defeating Caroline Garcia of France during the WTA Rising Stars Final at Singapore Sports Hub on October 25, 2015 in Singapore. (Photo by Matthew Stockman/Getty Images for WTA)

SINGAPORE - OCTOBER 25:  Naomi Osaka of Japan holds the winners trophy after defeating Caroline Garcia of France during the WTA Rising Stars Final at Singapore Sports Hub on October 25, 2015 in Singapore.  (Photo by Matthew Stockman/Getty Images for WTA)

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SINGAPORE - OCTOBER 25: Caroline Garcia of France and Naomi Osaka of Japan hold their trophies after the WTA Rising Stars Final at Singapore Sports Hub on October 25, 2015 in Singapore. (Photo by Clive Brunskill/Getty Images)

SINGAPORE - OCTOBER 25:  Caroline Garcia of France and Naomi Osaka of Japan hold their trophies after the WTA Rising Stars Final at Singapore Sports Hub on October 25, 2015 in Singapore.  (Photo by Clive Brunskill/Getty Images)

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SINGAPORE - OCTOBER 25: Caroline Garcia of France in action against Naomi Osaka of Japan during the WTA Rising Stars Final at Singapore Sports Hub on October 25, 2015 in Singapore. (Photo by Clive Brunskill/Getty Images)

SINGAPORE - OCTOBER 25:  Caroline Garcia of France in action against  Naomi Osaka of Japan during the WTA Rising Stars Final at Singapore Sports Hub on October 25, 2015 in Singapore.  (Photo by Clive Brunskill/Getty Images)

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SINGAPORE - OCTOBER 25: Naomi Osaka of Japan in action against Caroline Garcia of France during the WTA Rising Stars Final at Singapore Sports Hub on October 25, 2015 in Singapore. (Photo by Clive Brunskill/Getty Images)

SINGAPORE - OCTOBER 25:  Naomi Osaka of Japan in action against Caroline Garcia of France during the WTA Rising Stars Final at Singapore Sports Hub on October 25, 2015 in Singapore.  (Photo by Clive Brunskill/Getty Images)

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SINGAPORE - OCTOBER 25: Caroline Garcia of France and Naomi Osaka of Japan hold their trophies after the WTA Rising Stars Final at Singapore Sports Hub on October 25, 2015 in Singapore. (Photo by Matthew Stockman/Getty Images for WTA)

SINGAPORE - OCTOBER 25:  Caroline Garcia of France and Naomi Osaka of Japan hold their trophies after the WTA Rising Stars Final at Singapore Sports Hub on October 25, 2015 in Singapore.  (Photo by Matthew Stockman/Getty Images for WTA)