It is 53 years since nine brave women decided it was time to take a stand in the male-dominated world of tennis.
In 1970, inequality was rife in the sport, which had only recently entered the Open era, highlighted by the fact male players earned far more than their female counterparts.
With Billie Jean King as a key figurehead, a group of female players – known as the 'Original Nine' – took the move of starting a women's professional tour to challenge the establishment in the pursuit of equal rights in tennis.