Claressa Shields never expected to become heavyweight champion but it has secured her place 'amongst the greats'

Claressa Shields has secured her place in boxing history.

A decade ago she became the first American boxer to win consecutive Olympic gold medals.

As a professional she became an undisputed world champion at super-welter and middleweight (twice).

Last year Shields established herself as the ultimate trailblazer when she became the first undisputed heavyweight champion in women's boxing.