Much better from Ryan as she creates some much-needed space once again. Ryan watches Zamora come forward, steps back and punishes her with a perfectly-timed uppercut.

A slightly lower tempo round overall but that's not saying much.

Image source, Matchroom

Steve Bunce
Boxing expert on BBC Radio 5 Sports Extra

Just when you think Ryan needs a breather, she gives you 120 seconds of toe-to-toe. It was like they were in front of a mirror trying to outwork each other!

It's another tough round to score.

Ryan decides to stand and trade again and that allows Zamora to do what she does best - throw at will.

Ryan tries to pick her shots in a tight space but can't match the output of the Mexican.

Steve Bunce
Boxing expert on BBC Radio 5 Sports Extra

Maybe Ryan is showing the signs of fatigue. The last time she was in a hard fight was a long time ago, 12 months ago.

Richie Woodhall
Former boxing world champion on BBC Radio 5 Sports Extra

She's boxed really well at the start of this round, Ryan. Couple of lovely defensive moves. You can see the concentration on her face.

A reminder that this bout is scheduled for 10 rounds as we go into the second half of the bout. For what it's worth, I've got Zamora leading 3-2.

It does feel like the tide is starting to turn in Ryan's favour. Zamora expended a lot of energy into the first half of the fight her punches look a little laboured now.

Ryan has some bruising around the eyes and there is some blood coming from Zamora's nose.

Image source, Matchroom

Zamora's hands are very low every time she comes forward. The Mexican continues to attack the body and Ryan tries to counter with hooks to the head.

Some better work from Ryan in this round.

Steve Bunce
Boxing expert on BBC Radio 5 Sports Extra

Perhaps we're selling Zamora short. Perhaps she's a little bit better than we think. She's really good at chasing you.

Ryan seems to have abandoned her footwork in the opening minute of the round. She stands right in front of Zamora and eats punch after punch.

The Derby fighter starts to move in the second half of the round and Zamora goes after her.

It's relentless stuff.

Richie Woodhall
Former boxing world champion on BBC Radio 5 Sports Extra

Zamora, you have to give her credit, she just keeps on coming. She's strong!

Zamora is throwing all her weight behind every punch. How long can she sustain this level of aggression?

Ryan shows good footwork to slip away before returning with stabbing jabs and a hook.

The cleaner work comes from Ryan but it's Zamora who is the more active.

It'll be interesting to see what the judges favour if it goes the distance.

Image source, Matchroom

Richie Woodhall
Former boxing world champion on BBC Radio 5 Sports Extra

I think it is important for Zamora to keep the pressure on Sandy if she is to have any success. She's got to keep moving the feet into range and sustain the pressure.

Zamora is definitely game but Ryan starts to get a better read on her.

Ryan steps out of range and counters with a lovely hook.

Zamora ends up on the canvas but it's rightly ruled a slip rather than a knockdown.

It's a high tempo couple of rounds. I've got it 1-1.

Image source, Matchroom

Richie Woodhall
Former boxing world champion on BBC Radio 5 Sports Extra

Good start from both boxers. Zamora is on the front foot and looking for that right hand over the top. It's important Ryan tries hold the centre of the ring.

Zamora is out of the gate quickly and with intent. It's a first shot at a world title for the Mexican and she wants to grasp it with both hands.

Zamora targets the body of Ryan and has some early success until the Derby fighter starts to get a read on her opponent.

High output from Zamora throughout the entire two minutes. Ryan is yet to get going.

Sandy Ryan is bidding to become a two-weight world champion.

Mexico's Karla Ramos Zamora has never held a world title.

A touch of gloves and off we go.

And so does Sandy Ryan.

Both fighters clearly mean business.

One of them will be walking out of the arena as a world champion very shortly.

Image source, Matchroom