New York - 6. září 2018: Profesionální tenista Naomi Osaka v akci během její 2018 Us Open Semi-Final zápas na Národní tenisové centrum Billie Jean - Stock fotografie a obrázky

NEW YORK - SEPTEMBER 6, 2018: Professional tennis player Naomi Osaka in action during her 2018 US Open semi-final match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 6, 2018: Professional tennis player Naomi Osaka in action during her 2018 US Open semi-final match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 6, 2018: Professional tennis player Naomi Osaka in action during her 2018 US Open semi-final match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 6, 2018: Professional tennis player Naomi Osaka in action during her 2018 US Open semi-final match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 6, 2018: Professional tennis player Naomi Osaka in action during her 2018 US Open semi-final match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 6, 2018: Professional tennis player Naomi Osaka in action during her 2018 US Open semi-final match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 6, 2018: Professional tennis player Naomi Osaka celebrates victory after 2018 US Open semi-final match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 27, 2019: Professional tennis player Taylor Townsend of United States in action during her 2019 US Open first round match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 29, 2017: Professional tennis player Madison Keys of United States in action during her US Open 2017 first round match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 8, 2018: 2018 US Open champion Naomi Osaka of Japan in action during her final match against Serena Williams at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 6, 2018: Professional tennis player Naomi Osaka in action during her 2018 US Open semi-final match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 29, 2017: Professional tennis player Naomi Osaka of Japan in action during her 2017 US Open first round match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 29, 2017: Professional tennis player Naomi Osaka of Japan celebrates victory after her 2017 US Open first round match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 31, 2015: Grand Slam champion Venus Williams in action during first round match at US Open 2015 at National Tennis Center in New York

NEW YORK - AUGUST 27, 2019: Professional tennis player 15-year-old Coco Gauff of United States in action during her 2019 US Open first round match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 6, 2018: Professional tennis player Naomi Osaka in action during her 2018 US Open semi-final match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 6, 2018: Professional tennis player Naomi Osaka in action during her 2018 US Open semi-final match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 6, 2018: Professional tennis player Naomi Osaka in action during her 2018 US Open semi-final match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 8, 2018: 23-time Grand Slam champion Serena Williams in action during her 2018 US Open final match against Naomi Osaka at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 6, 2018: Professional tennis player Naomi Osaka in action during her 2018 US Open semi-final match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 31, 2015: Twenty one times Grand Slam champion Serena Williams in action during first round match at US Open 2015 at National Tennis Center in New York

MIAMI GARDENS, FLORIDA - MARCH 23, 2019: Grand Slam champion Naomi Osaka of Japan in action during her round of 32 match at 2019 Miami Open at the Hard Rock Stadium in Miami Gardens, Florida