One of the greatest female fighters of all time, the US's Claressa Shields, laces up the gloves and gets Tony on the ropes.

The only boxer in history, male or female, to hold all four major titles in boxing simultaneously, in two weight classes, as well as two Olympic gold medals, Claressa is a force to be reckoned with. In 2020 she switched from boxing to Mixed Martial Arts and promptly won her debut with a TKO. Growing up with her grandmother in Flint, Michigan, she admits to always being super competitive at everything she did. From bowling to playing pool, to guys challenging her to boxing matches. If someone told her she couldn't do something it only made her try harder. And, as Tony discovers, you have to be careful which company you put her in when talking about her fellow boxers!

Producer: Mike Holt

An Orion Publishing Group production for BBC 5 Live and BBC Sounds