
13. Claressa Shields (2021)
Nicola Adams was the first woman to win an Olympic gold medal in boxing. Katie Taylor and Shields quickly followed in her footsteps at the same games in London. However, Shields made history when she followed up with a second gold medal in Rio De Janeiro. This made her the only American boxer ever to achieve this. Then she turned professional and set even more records.

Shields is quite simply a destroyer. First of all, she became the undisputed middleweight titleholder when she united all the major belts in the division. Then, she became the first boxer in history to repeat the feat in a second weight class. She’s also the quickest boxer to win titles in three divisions. Now she is competing in MMA and it looks like she will take over the combat sports world.