Julianna Pena faces one of the toughest tests of her career so far as she defends her UFC women's bantamweight title against Kayla Harrison.
Harrison is an Olympic and PFL champion and has looked destined for the top since moving to the UFC.
Kayla Harrison to win the fight via Decision or Technical Decision @ 2/1
Adam Catterall said: "You've got to absolutely nail [Pena] to the canvas if you're going to get the job done against her. She's got the confidence of being the two-time champion.
"Kayla Harrison is a champion from outside the UFC, a champion at the Olympics and she just has the 'it' factor. She's technically very, very good but there's a couple of questions over Kayla. At this weight category, she's a big girl, and now she's in a championship fight, being able to deliver over five rounds is a question I have.
"Can Kayla Harrison do that or will she run out of gas? If this was a three-round fight, I would nail it to the mast that Harrison would win the fight.
"What's going to happen in rounds four and five? I've got a feeling Julianna will take over. Will Kayla have done enough in the early rounds of this fight to win a decision? I think she will. I think she'll hang on, but it'll be tough in rounds four and five."
All odds were correct and available at the time of writing and are subject to withdrawal and fluctuation.