Why you can trust GamesRadar+ Our experts review games, movies and tech over countless hours, so you can choose the best for you. Find out more about our reviews policy.

The bizarre (mis) match between reigning Wimbledon champion Billie Jean King and Austin Powers-alike Bobby Riggs gripped the world in 1973, for all the latter’s Stone Age chauvinism.

As fascinating as it is to relive, James Erskine’s documentary struggles to make the episode a metaphor for sexism in society – an issue too big to be boiled down to one gender-politics sideshow.

King, then and now, exudes dignity, good humour and forbearance – qualities you wish some of the players who followed in her wake, included here as bland talking heads, displayed as readily.