Katie Taylor's rise to the top has been well documented.
Promoter Eddie Hearn has been marketing her as the women's division's answer to Vasyl Lomachenko, in the sense of her rise to the top of the professional game will be rapid.
Former double Olympic gold medalist Lomachenko was crowned world champion in just his third professional fight.
People have questioned the quality of Taylor's opponent's to date, but the woman in the opposite corner for this Saturday will definitely be her toughest challenge yet.
She'll go up against Milena Koleva, who has a 9-7-1 record from 17 fights.
However, don't let the record fool you, as Koleva's last fight was a losing one for the IBF super featherweight title.
The Bulgarian, as a title fighter, will pose a much bigger threat to the Olympic gold medalist, and will give us a real indication of how far away she is from a world title fight.
The fight takes place on Saturday, and will be on the undercard to Anthony Crolla and Jorge Linares at the M.E.N Arena in Manchester.