Katie Taylor defends her lightweight belts against undefeated Spanish boxer Miriam Gutierrez tonight as she aims to extend her professional record to 17-0.
A win for the Bray boxer in London could open a lot of doors for fights next year, with some big names in both the boxing and MMA worlds looking to face her.
Tonight's event is historic as it features three women's world title fights and will be streamed around the world for free.
Here's everything you need to know:
Where is the fight?
The bout takes place at the Wembley Arena in London.
When does it start?
The first bout of the evening is a light-heavyweight contest between Thomas Whittaker-Hart and Jermaine Springer and is scheduled to start at 6.10pm.
Taylor v Gutierrez is expected to get underway just after 10pm.
What channel is showing it?
Sky Sports will televise the majority of the fights live this evening, but they are streaming all of them live for free online.
You can watch them in the video below:
Fight card
8 x 3 mins Light-Heavyweight contest
THOMAS WHITTAKER-HART 12st 6lbs 9oz v JERMAINE SPRINGER 12st 5lbs 4oz
10 x 3 mins vacant WBA Continental Bantamweight Title
KASH FAROOQ 8st 5lbs 0oz v ANGEL AVILES 8st 8lbs 0oz
10 x 3 mins British Super-Middleweight Title Eliminator
JOHN DOCHERTY 11st 12lbs 9oz v JACK CULLEN 11st 13lbs 7oz
10 x 2 mins vacant Interim WBC Super-Bantamweight World Title
RACHEL BALL 8st 9lbs 9oz v JORGELINA GUANINI 8st 13lbs 7oz
10 x 2 mins WBC and IBO Super-Featherweight World Titles
TERRI HARPER 9st 3lbs 5oz v KATHARINA THANDERZ 9st 3lbs 10oz
10 x 2 mins Undisputed Lightweight World Titles
KATIE TAYLOR 9st 8lbs 7oz v MIRIAM GUTIERREZ 9st 8lbs 6oz
Quotes corner
Katie Taylor: "I am expecting a very tough fight. She can be very tricky at times and very awkward as well. These are the types of fighters who are very hard to look well against at times.
"But I come into this fight prepared for anything that comes my way. I'm prepared to go into the trenches if need be.
"I prepare for every fight to be my toughest fight and this is no different."
She added: "Every fight is more experience and I think this opponent in particular is very different to any of my other opponents that I have fought.
"I think she's actually a lot better than what people think. I think she's a lot trickier than what people think as well.
"Obviously the last few fights I've faced typical fighters, very scrappy fighters and this particular opponent is more stylistic than what I faced before so it is going to be a completely different challenge.
"I know from watching her in some of her previous fights that she is more of a boxer than a fighter. I'm not too sure if that's going to change on Saturday night, but I'm well prepared for whatever comes my way."
Miriam Gutierrez: "I don't see any weaknesses in her at all. I think it's impossible to see any in her. I just have pure admiration for her and I'm looking forward to getting in the ring to fight."
She added: "It's a really lovely moment and event and it's just about enjoying it now.
"I think for this fight to have been arranged and to go ahead means that I've got the qualities that will make it a good fight.
"I always look to create something that is beautiful, that is lovely, whether it's being tactical or whatever. Just something that can look good and I can enjoy myself and entertain."
Betting odds
Katie Taylor win: 1/40
Miriam Gutierrez win: 16/1
Draw: 33/1
