TORONTO – Joanna Jedrzejczyk believes a victory at UFC 231 makes her the greatest female fighter in women’s MMA history.

Jedrzejczyk (15-2 MMA, 9-2 UFC) will have the opportunity to do something unique on Saturday when she can become the first female fighter to capture belts in two separate weight classes. The former strawweight champion will move up to flyweight to fight Valentina Shevchenko (15-3 MMA, 4-2 UFC) for the vacant belt at UFC 231.

The Polish fighter can do something unprecedented for a female in the sport, and she said that accomplishment would leave her with a one-of-a-kind legacy.

“After victory on Saturday I will prove that I am the GOAT of women’s MMA,” Jedrzejczyk told reporters, including MMAjunkie, at today’s UFC 231 pre-fight news conference.

UFC 231 takes place at Scotiabank Arena in Toronto. Jedrzejczyk vs. Shevchenko co-headlines the pay-per-view main card following prelims on FS1 and UFC Fight Pass.

Jedrzejczyk and Shevchenko share a history that goes back roughly a decade. They fought three times under muay Thai rules, with Shevchenko winning all three contests. Jedrzejczyk said those results don’t matter when it comes to this fight, though, and to expect a completely different result.

Although she’s never fought at 125 pounds under the UFC banner, Jedrzejczyk is 6-0 at the weight during her overall career. Shevchenko has fought the majority of her run at women’s bantamweight, but after experiencing a training camp where she was able to focus more on her skills than weight cut, Jedrzejczyk doesn’t expect size to play a role in the contest.

“I am so happy, and this camp I realized how difficult it is and how the weight cut and how being on a strict diet for so many weeks can affect your body, your brain and your performance,” Jedrzejczyk said. “This camp was different because I was able to do more. Every camp I’m like, ‘Quantity over quality.’ But this camp it was quality and quantity every day.”

Although Jedrzejczyk has the chance to become just the second 125-pound champ in UFC history, she said that doesn’t mean her run strawweight run is over. She said she intends to return to 115 pounds next year and warned everyone in the weight class about her impending return.

“Strawweights, bow down,” Jedrzejczyk said. “I’m coming back next year. Who else you see? Who else? Who is left. I beat all of them. All of them.”

For more on UFC 231, check out the UFC Rumors section of the site.