It was the only tennis match to start with a piglet being handed over to one of the competitors - but this was no ordinary match.
On 20 September 1973, an estimated 90 million people around the world watched Billie Jean King beat self-proclaimed chauvinist Bobby Riggs in a best-of-five match at the Houston Astrodome.
There was pageantry, pomp and a $100,000 (£74,765) cheque for the winner. It was the second instalment of the Battle of the Sexes - but that name is more than just a marketing slogan.
King's victory over Riggs was a part of the women's right movement.