Holm debuted in the ring in 2002, winning the IBA light-welterweight title, as well as the WBA, WIBA, IFBA, IBA, and GBU welterweight belts. Holm defeated Anne Sophie Mathis, Diana Prazak, Christy Martin, Mia St. John, and Mary Jo Sanders with nine knockout victories.
Martin was the first woman admitted into the Nevada Boxing Hall of Fame, as well as the International Boxing Hall of Fame. There can only be one Christy Martin, and boxing is fortunate to have her.
Ali has won the IBA, IWBF, WBC, and WIBA super-middleweight titles, as well as the IWBF light-heavyweight title. Ali defeated Jacqui Frazier-Lyde to become the first woman to headline a pay-per-view event.
In a fight against Vonda Ward in 2004, Wolfe knocked her out in the first round with a devastating strike that is still spoken about today. She keeps giving back by training fighters such as James Kirkland.
In 1995, Halmich won the IBF flyweight title and successfully defended it 29 times. She also won the IBF super-flyweight and light-flyweight championships. The German fighter contributed to the sport's popularity in Europe.
Her lethal striking ability enabled her to play a pivotal role in Million Dollar Baby. Boxing fans didn't get to watch her fight Christy Martin, but there's no denying the woman with 14 knockout victories was a force to be reckoned with.
Cecilia Braekhus is one of just ten female boxers in history to hold all four major titles simultaneously. She would end up defending her championships 25 times after acquiring additional gold.
Shields, a two-time Olympic gold winner, has already established himself as the uncontested middleweight champion and dominated the light-middleweight division in only twelve contests.
She has won 28 fights in a row, with her last loss being in 2012 against Frida Wallberg. Serrano has since defeated Eva Voraberger, Yazmin Rivas, Heather Hardy, Daniela Romina Bermudez, and Fatuma Zarika, among others.
The Irish boxer has won five World Championships and six European Championships in her amateur career. Taylor has almost 170 amateur victories to go along with her unbeaten professional record. Taylor, a tenacious fighter, may be nearing the end of her career, even at the age of 35.