NEW YORK - 8 SETTEMBRE 2018: 23 volte campionessa del Grande Slam Serena Williams in azione durante la sua finale degli US Open 2018 contro Naomi Osaka al Billie Jean King National Tennis Center - Foto e immagini stock

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 8, 2018: 23-time Grand Slam champion Serena Williams broke tennis racket during her 2018 US Open 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 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 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 2, 2018: 23-time Grand Slam champion Serena Williams in action during her 2018 US Open round of 16 match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 8, 2018: 23-time Grand Slam champion Serena Williams argues with chair umpire Carlos Ramos during her 2018 US Open final match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 8, 2018: 23-time Grand Slam champion Serena Williams broke tennis racket during her 2018 US Open 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 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 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 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 2, 2018: 23-time Grand Slam champion Serena Williams in action during her 2018 US Open round of 16 match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 8, 2018: 23-time Grand Slam champion Serena Williams argues with chair umpire Carlos Ramos during her 2018 US Open 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 - AUGUST 27, 2018: 23-time Grand Slam champion Serena Williams in action during her 2018 US Open first round match at Billie Jean King National Tennis Center

NEW YORK - SEPTEMBER 8, 2018: 23-time Grand Slam champion Serena Williams broke tennis racket during her 2018 US Open final match at Billie Jean King National Tennis Center

MELBOURNE, AUSTRALIA - JANUARY 26, 2016: Twenty one times Grand Slam champion Serena Williams in action during her quarter final match at Australian Open 2016 at Australian tennis center in Melbourne

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: 23-time Grand Slam champion Serena Williams in action during her 2018 US Open semi-final match at Billie Jean King National Tennis Center

NEW YORK - AUGUST 30, 2016: Grand Slam champion Serena Williams in action during first round match at US Open 2016 at Billie Jean King National Tennis Center in New York

NEW YORK - AUGUST 27, 2018: 23-time Grand Slam champion Serena Williams in action during her 2018 US Open first round 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 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 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 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 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 2, 2018: 23-time Grand Slam champion Serena Williams in action during her 2018 US Open round of 16 match at Billie Jean King National Tennis Center