Claressa Shields believes Amanda Nunes is encroaching on her turf.

The three-division titleholder calls herself boxing’s GWOAT, or the Greatest Woman of All Time, but she knows that in some circles the UFC’s Nunes, one of the most dominant and popular figures in mixed-martial-arts, is regarded as the top female fighter bar none.

And that, according to the 25-year-old Shields, is a sore, sore mistake. 

“Being the Greatest Woman of All Time in boxing is cool,” Shields said on The Last Stand Podcast with Brian Custer, “but I hate people that say Amanda Nunes fights better than me. No, you do MMA better than me, for sure, because that’s what you do, but if you take away her kicking and her elbows, and we were to just go left and right (hands) I would win.”

Shields (10-0, 2 KOs), who has notched titles at 168, 160, and 154 pounds, has teased a possible entry into the world of MMA, if only to specifically address this issue.

“I definitely see myself getting in the Octagon but not for reasons that I want to fight in the Octagon,” Shields said. “I want to be known as the best woman fighter ever.”

The Detroit native wants to make one thing clear, though. Nunes shouldn’t be regarded as the best female fighter until she dons a pair of boxing gloves. Until then, any talk of Nunes being the better fighter should be squashed. Nunes, who is Brazilian, sports a 20-4 record in the UFC.

“MMA fighters make it seem like she could just come over and beat (me) and it’s like they gotta me smoking some kind of dope or something,” Shields said. “That’s like if I could go over to the MMA without training and beat her. It’s like, I gotta train, I gotta get some kind of experience. I gotta get some fights in MMA. You can’t just go over there and act like the kicking and the elbows don’t matter. That stuff matters in MMA. But in boxing it doesn’t. You can say she’s the Greatest Woman of All Time in MMA but when it comes to ‘Oh, she’s got better hands than any woman fighter that I’ve ever seen,’ that’s a damn lie.”

“I would love to do both (fight Nunes in the boxing ring and in the octagon),” Shields continued. “It depend on her. I know I want to do both. And I’m willing to train and get ready for it.”

Shields’s last fight was in January, a clear unanimous decision over Ivana Habazin for a vacant WBC 154-pound title.