Undisputed super middleweight champion Savannah Marshall is clamoring for the possibility of securing revenge against career rival Claressa Shields - and she's ready to explore that scenario in MMA or boxing.

Last year, Marshall suffered her first career defeat when she dropped a unanimous decision to Shields in their middleweight unification clash.

Back in August, Marshall expanded her role in combat sports when she signed an agreement with MMA organization PFL. Shields, who has two MMA fights under her belt, also has a contract with PFL.

"I've boxed her in the ring and I'm chasing her to another sport," Marshall told Sky Sports News.

"She said something along the lines of 'I hate you, but I love you.' It's one of them things. I bet she's sick of the sight of me now. Even taking Claressa out of the equation the opportunity [to do the deal with PFL] is just too good for me to miss."

Marshall admits the risk of entering a different sport could certainly backfire.

"It could go either way. I could really take to it and take the PFL world by storm or in a year's time I could be sat here thinking what on earth did I do that for? Face all mashed up. But you only live once," Marshall said.

"There are quite a few boxers that transitioned over. You had Holly Holm. Obviously, Conor McGregor, his fundamentals were boxing and when you not just watch but actually look and take note you can actually see who's got those boxing fundamentals."

Marshall currently has a mandatory defense hanging over her head, against the WBC's top challenger Shadasia Green.

"I'll be focusing on the boxing when I'm boxing and then when I'm not boxing, I'll be focusing on this full-time," Marshall said. "Boxing's my main priority. This is just a little adventure.

"I won't be boxing till next year and then I've got mandatories and things like that, so it's all geared around boxing. So hopefully back in the ring early next year and then potentially the summer."