Shields, nicknamed the GWOAT, is considered one of the world's best boxers, male or female. She aims to become a four-weight world champion on Saturday.
The undefeated American steps up to 12st 7lb (175lb) to fight for the WBC heavyweight title and WBO light-heavyweight belt.
Speaking at a news conference before her fight in Detroit with Vanessa Lepage-Joanisse, Shields addressed her rivals.
"Any of those girls who want to be the GWOAT, all you got to do is make the fight with me," Shields said, naming Alycia Baumgardner, Amanda Serrano, and Katie Taylor.
Shields, 29, is undefeated in 14 pro fights and was the first fighter, male or female, to be undisputed champion in two weight classes in the four-belt era.
The two-time Olympic champion has been world champion at middleweight, light-middleweight, and super-middleweight.
Irishwoman Taylor replicated Shields' undisputed achievement last year, while Puerto Rico's Amanda Serrano is a seven-weight world champion.
"All that comparison about who the GWOAT is, I can go to any weight class and win. That's who the GWOAT is," Shields declared confidently.