Tennis great Billie Jean King says the 'Battle of the Sexes' match between Aryna Sabalenka and Nick Kyrgios is "not the same" as her era-defining meeting with Bobby Riggs.
American King famously beat self-proclaimed chauvinist Riggs 6-4 6-3 6-3 in Houston in September 1973 for a winner-take-all prize of $100,000 (£74,765).
An estimated 90 million people worldwide watched King, then aged 29, win the best-of-five set match against a 55-year-old former Wimbledon and US Open singles champion - and it is remembered as a key part of the women's rights movement and push for equality in sport.