Alycia Baumgardner is open to fighting Katie Taylor if she can stun Mikaela Mayer in London this weekend.
The WBC and IBO super-featherweight title holder faces Mayer, who holds the WBO and IBF belts, in a unification bout ahead of Claressa Shields v Savannah Marshall, who clash for the undisputed middleweight championship on Saturday night.
Baumgardner comes into the fight as the underdog in the betting, but she is confident of pulling off an upset as she targets her third win on English soil in ten months after victories over Terri Harper and Edith Soledad Matthysse.
The American told Sky Sports: "She's a one-dimensional fighter, she looks the same as she did in the amateurs as she does in the pros.
"There are levels to this game and I believe she's only maybe up a notch in her career, I don't see anything that stands out to me. I'm not looking up Mikaela Mayer's fights, she's not that impressive to me."
She added: "When I knock her out it's definitely going to change the whole dynamic of the whole fight night, it's going to be huge, I promise it is."
On what comes next if she wins on Saturday, Baumgardner stated: "Being undisputed at 130 is No 1 (among goals). After that I want to move to 135, I want to fight whoever the best is.
"If that's a Katie Taylor, Amanda Serrano, whoever that is I want to fight. I'm an athlete, a competitor, I want to fight the best.
"These fights build the sport of boxing. For me I'm building a legacy, it's really not so much about how many titles you have, how many accomplishments you accomplish, it's about legacy, cementing who you are as a fighter, outside the ring and it all comes together."
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