Serrano says she is good to continue but that eye is not looking good for the four rounds still to come.

Serrano is going to have to chase a win as soon as possible.

Taylor continues to work that left hook and Serrano shakes her head as she walks back to her corner.

The initial cut came from a clash of heads and a second clash on the same spot has opened the cut wider.

Taylor is told "stop the holding, you're better than that", as she comes out of her corner for round six.

Taylor works a fine combination - left, right, left - and it has split that cut above Serrano's right eye wide open.

The referee has called a halt to this fight while Serrano is checked by the doctor.

"She wants to hold, that's all she can do", that's the message from Amanda Serrano's corner between rounds.

Taylor has a target to aim for now with that cut staring right at her, especially with the champion's left hook already causing problems.

Serrano turns up the pace even further and Taylor looks to hold on - she gets a warning from the referee.

Serrano is definitely the more active but Taylor seems to be landing with greater accuracy.

Image source, Getty Images

Taylor is backed into the corner but fights her way out incredibly well with a one-two-three.

Now it starts to open up as they both throw caution to wind and start to unload.

It looks like there was a clash of heads and Serrano has a cut above her right eye. That looks like it could prove to be an issue as this fight goes on.

Taylor is starting to find a home with her lead left, landing hooks and using the jab to good effect.

Serrano is relentless, though, she continues to walk forward and is claiming real estate in the centre of the ring.

It gets a little messy in the final seconds, but I give that round to Taylor.

Image source, Getty Images

Much better from Taylor.

The champion starts to find some joy with combinations.

She was stung in that opening round but seems to be finding her rhythm and range.

The pair both land on the onside before holding on.

This is bubbling nicely.

Remember this is 10x2 minute rounds.

A good tempo from the outset.

Serrano is on the front foot and walking Taylor down, trying to apply the early pressure.

Oh! Right at the end of the round Serrano rocks Taylor and she stumbles back.

The bell sounds as Taylor clinches onto Serrano and she survives.

Image source, Getty Images

HERE WE GO!!!

Final chance for you to have your say.

Thumbs up for Taylor to win or thumbs down for Serrano to take it.

Andre Ward
Retired two-weight world champion on Netflix

Katie Taylor fights the way she fights. If you hit her, her engine revs up. Amanda Serrano will be thinking, knockout, knockout, knockout.

And here comes the undisputed light-welterweight champion Katie Taylor.

No cheerleaders for Taylor as she calmly walks down the ramp accompanied by her full collection of belts and to the sound of 'Awake My Soul' by Hillsong Worship and Brooke Ligertwood.

A black and gold robe with jewels on the shoulders is the very stylish outfit of choice for the champ.

That was a considered walk.

Just 30 minutes later than billed - not too bad as far as some of these cards go - we have challenger Amanda Serrano making the walk.

Serrano makes her way down the ramp and is flanked by the Dallas Cowboys cheerleaders.

The seven-weight champion is wearing a hat that says 'the real vs the fake' and has a message saying 'believe in yourself' on her vest.

Serrano, as always, looks super confident and is waving her arms up and down to try and draw a reaction from the crowd at AT&T Stadium.

Image source, Getty Images

Roy Jones Jr
Retired world champion on Netflix

Serrano needs to manage the fight, but know when to accelerate. If she slows down it gives Katie a better chance.

Andre Ward
Retired two-weight world champion on Netflix

Katie has miles on her clock. Serrano does too, but I think she's a little bit more preserved than Taylor. Power will be big in this fight.

Two-weight world champion Natasha Jonas: "You can never usually bet against Katie Taylor but I am going to. Being out the ring for so long against a pressure fighter and, most of all, a southpaw, will cause her a lot of problems like it did in the first fight.

"There isn't a style that Taylor hasn't come across. Even when she lost, she came back and won emphatically. But I do think everything edges to Serrano."

Lightweight contender Caroline Dubois: "I believe Katie wins the fight on points."

Retired world champion Barry Jones: "Katie Taylor v Amanda Serrano 2 - still the best fight in boxing, as was the first fight. An absolute war of the ages. This fight is a little different as both fighters have a few more miles on the clock. Katie probably has a few more miles, although Serrano hasn't been the vintage fighter we've seen in the past.

"This is at light-welterweight, the weight advantage is with Katie even more so in this second fight. I see it going down to who can dominate early. Serrano is a heavy hitter. It's important for her to make Katie feel the pace. Will it be about wear and tear? Miles on the clock? Desire? Will Katie Taylor go to her well again? I think she can. I'm predicting a very close points victory for the queen of Ireland."

Andre Ward
Retired two-weight world champion on Netflix

Katie Taylor wants to prove to the world the first fight wasn't a fluke. She'll be nervous, but she'll be ready.