Lauren Price gets her first shot at a world championship belt this weekend.
She will be gunning for Jessica, who holds the WBA welterweight belt.
Here's everything you need to know ahead of McCaskill vs. Price.
The event should start at a round 8 pm UK time / 3 pm ET, with a main event likely to have its ringwalks at 10.30 pm UK time / 5.30pm ET. The precise times of fights may be changed by the length of bouts on the undercard.
Lauren Price:
"You see what Katie Taylor has done for Ireland, I want to do the same for Wales. Win this fight and I've made history again.
"I want to bring boxing back to Wales. We saw what (Joe) Calzaghe did and it's time for me to fly the flag and get big nights back to Wales.
"We're a small nation, a very proud country. You see it with the Six Nations and football, everybody gets behind their own.
"You only have to go to a rugby match in Cardiff and the streets are full. I hope on May 11 they will come out and support me."
Jessica McCaskill:
"The only thing that is different is the experience, there are amateurs and pro. Pro is very different - she doesn't have the pro experience and that could be the main factor here.
"The drive, the training, her team, she has great elements behind her.
"She says she's seen a lot of styles, but she hasn't seen crazy, and a little bit of crazy is going to be in that ring.
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