Home Taylor, Serrano, Marshall: The top five female fighters of 2021 Jessica McCaskill made two defences of her undisputed welterweight crown in 2021 Photo Credit: Ed Mulholland/Matchroom

Jessica McCaskill made two defences of her undisputed welterweight crown in 2021 Photo Credit: Ed Mulholland/Matchroom

Savannah Marshall has defended her WBO middleweight title twice this year Photo Credit: Dave Thompson/Matchroom Boxing

Jessica McCaskill made two defences of her undisputed welterweight crown in 2021 Photo Credit: Ed Mulholland/Matchroom

Katie Taylor has made three defences of her undisputed lightweight crown in 2021 Photo Credit: Mark Robinson/Matchroom Boxing

Amanda Serrano, Katie Taylor and Savannah Marshall have all starred in 2021 Photo Credit: Ed Mulholland/Matchroom Boxing USA/Mark Robinson/Dave Thompson/Matchroom Boxing

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