7. Mia St. John
Mia St. John’s success in boxing began when she was just six years old and began competing in Tae Kwon Do. With a black belt in Tae Kwon Do, Mia moved into professional boxing in 1997. She knocked out her first opponent in under a minute, sealing her legitimacy in the boxing world. St. John went on to open for all of Oscar De La Hoya’s major fights for the next four years.
Mia St John fought in 47 professional matches before she was given a title bout with Liz Drew, a match that would earn her the IFBA lightweight world title. Almost immediately after St. John fought Donna Biggers and won the IBA continental lightweight title. At the age of 40, St John fought in Mexico and won the WBC international boxing championship. Finally, at the age of 45, Mia St John won her match against Christy Martin and claimed the WBC Super Welter Weight Championship of the World.
During her career Mia St. John fought a record 60 matches. She won 47 matches, 18 by knockout.