A bloodied Lauren Price dug deep to beat Stephanie Pineiro on points to retain her welterweight world titles in Cardiff before calling for a future fight with Claressa Shields.
The 31-year-old picked up a terrible cut after a clash of heads in the fifth round against the previously unbeaten Puerto Rican.
Price rallied to fight to the final bell and was rewarded with a unanimous decision on the scorecards.
After the fight, American Shields - who has held 15 world title belts across five weight divisions - stepped into the ring to face off with Price.
"I want the biggest fights in boxing, and what a great honour it would be to share the ring with Shields," said Price.
"It makes for a great fight, but not just one fight. I said to her tonight, 'Let's do it, I'll come to America and then you come to Wales,' and she shook on it. So hopefully we can make that happen.
"It is why I'm in the game, I want to fight the best. Credit to Shields - I respect her - but I back myself!"
Shields said the location of any fight would have to be discussed but hinted at a meeting between the two stars at the end of 2026 and said the bout would be at middleweight.
"When you are an Olympic champion you are a special fighter," said Shields.
"Me and you have talked online and me and you can make it happen, you did great tonight.
"No disrespect to you, you've got a little bit of time. I've got one more fight and then we can fight at the end of the year."
Price has spoken often about staging a future fight at either the 33,000-seat Cardiff City Stadium or Principality Stadium, which can hold almost 80,000 fans.
In Shields, Price could face the calibre of opponent who would merit such a step up in venue.
Shields, also 31, currently holds the IBF, WBC, WBF and WBO heavyweight world titles and has a professional fighting record of 18-0.
But Price's win over Pineiro was no walk in the park.
Previously, Price has cruised through fights, but against the previously unbeaten Pineiro - who had promised to shock the Cardiff crowd - she was made to work for her win.
Price expected the "kitchen sink from round one" and Pineiro immediately looked to start the fight on the front foot.
The 35-year-old landed her share of punches in the opening two minutes and did not look out of her depth in her first professional fight outside of Puerto Rico.
However, Price was far more dominant in round two, using speed to her advantage against her significantly taller opponent to land a string of clean punches.
The left eye of Pineiro looked visibly bruised and swollen to begin round three and three more right hooks from Price added to the damage.
But Pineiro proved she was there on merit in the middle rounds, turning in a composed fifth round during which Price's lip was heavily split.
Undeterred, Price took things up a gear in the sixth and seventh rounds, finishing each with a flurry of punches which left Pineiro looking off-balance.
Two relatively uneventful rounds followed, though the damage on both fighters' faces was becoming more and more apparent.
Knowing a knockout was probably needed, Pineiro pressed forward in the 10th and final round, but it was Price who continued to land the more significant strikes while cheered on by the majority-Welsh crowd.
The judges' scorecards told the story, as Price was declared the winner to rapturous applause with scores of 99-91, 98-92 and 98-92.
With a super-fight now in Price's sights, her promoter Ben Shalom said the Welshwoman could be the number one pound-for-pound female fighter on the planet by the end of the year.
"It's only a matter of time. To become the number one fighter in the world, you have to box the number one fighter in the world," he said.
"I believe that fight will happen this year and as Lauren said on a two-fight deal."
