Katie Taylor says she has had enough of the "whining and complaining" from Amanda Serrano following their two tight showdowns.
The rivals came face to face at a press conference in New York on Wednesday ahead of their highly anticipated third bout on Friday.
Taylor said: "The fact is, I am 2-0 against her. Opinions are opinions, but facts are facts. I'm just sick of the complaining and whining from your team."
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Taylor last defeated Serrano via unanimous decision in Texas in November, all three judges scoring the fight 95-94 in the Irish fighter's favour.
But controversy erupted post-fight when the Puerto Rican star used her interview on Netflix to accuse Taylor of intentional headbutting.
"The only thing that matters is that I'm 2-0 against her," Taylor said. "I plan on staying unbeaten against her."
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Serrano and Taylor will meet for a third time at Madison Square Garden.
When asked what she planned on improving in the latest rematch, Serrano said: "I'm going to use my head, but not the way it was used on me. We're going to be smarter, work smarter."
During their last fight, Serrano received a bad cut above her eye in the fourth round, which was attributed to an accidental headbutt.
Taylor was deducted a point in the eighth round after repeatedly being warned against leading with the head.
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Serrano herself asked Taylor why she would opt to take a third fight and disrupt her winning streak.
"I'm taking the fight again because I love the challenge of this," Taylor said.
"I don't think it really matters that I'm 2-0, I just want to take the biggest challenges, the biggest fights."
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The pair's November encounter was a brutal back-and-forth affair through 10 rounds, which mirrored their classic initial meeting at Madison Square Garden in 2022.
Taylor and Serrano embraced each other after the bell, but the heavily pro-Serrano crowd voiced their displeasure as the result was announced.