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Fewest fights to become a two-weight boxing world champion

Fewest fights to become a two-weight boxing world champion
Who
Claressa Shields
What
6 total number
Where
Not Applicable
When
22 June 2018

The fewest fights to become a two-weight boxing champion is 6, achieved by Claressa Shields between 19 November 2016 and 22 June 2018.

Shields won her first professional belts (WBC and IBF super middleweight) in her fourth fight, against Nikki Adler on 4 August 2017. She dropped down to middleweight to face Hanna Gabriels on 22 June 2018, claiming the WBA and IBF titles via unanimous decision.