Gareth Vincent
BBC Sport Wales at the Swansea.com Stadium

The only disappointment for Swansea in that first half was that they did not score more than one goal.

They could have been out of sight, yet the fact is that Cardiff's 10 men are still in this contest.

Having been done no favours by Callum Robinson's early dismissal, the Bluebirds had to hang on in there in that first period.

Now they must conjure a response.

Image source, Huw Evans Picture Agency

Mark Harris is from Swansea and has played for Cardiff, Newport County and Wrexham.

A quirky stat.

We are back under way in Swansea.

A change for Cardiff, with Mark Harris on for Sheyi Ojo.

The players are back on the pitch, ready for the second half.

Swansea-born Wales forward Mark Harris looks like he's coming on for Cardiff.

With Swansea and Watford both winning their respective derbies at half-time, here's how the Championship table looks as things stand.

Swansea are up to fourth, Watford are into the top 10 and Luton down to ninth.

As for Cardiff? They're staying 20th for now, two points above the relegation zone but only five adrift of Watford.

Image source, BBC Sport

Danny Gabbidon
Former Cardiff City defender on BBC Radio Wales

I feel sorry for the Cardiff players, I feel sorry for the manager but since going down to 10 men they've actually done alright, they've kept a good defensive shape and they've shown one or two moments going forward.

There we are.

All Swansea after Callum Robinson's stupid red card and Cedric Kipre got away with the most blatant handball you could ever see.

Swansea lead through Ollie Cooper's goal and will feel they should have more.

Cardiff fans will be dreading the second half.

Image source, Getty Images

The referee blows for half-time and Slaven Bilic will go in to the dressing room delighted by what he's seen.

Keinan Davis's third-minute goal gave his side the dream start as Watford dominated from start to finish.

Davis was lively throughout and forced two good saves from Luton goalkeeper Ethan Horvath as the Hornets looked to double their lead.

And on 45 minutes William Troost-Ekong turned home to give the home side some breathing room heading into the second half.

Ben Cabango heads straight at Ryan Allsop.

Ollie Cooper completely misses his shot! He clips the ball and it goes away from goal.

That was another big chance.

Very comfortable possession for Swansea now.

Another decent chance for Michael Obafemi, but he turns Joel Latibeaudiere's cross wide.

Two good chances for Obafemi today.

Swansea could be out of sight.

Danny Gabbidon
Former Cardiff City defender on BBC Radio Wales

There's not much else Cardiff can do when they are down to 10 men, they can't really go away from this game plan they've just got to try and keep themselves in the game.

Gareth Vincent
BBC Sport Wales at the Swansea.com Stadium

Well, well, well. Ollie Cooper's father Kevin played for Cardiff.

As a result the younger Cooper grew up near Cardiff, and most of his mates are Bluebirds fans.

He had numerous failed trials at Cardiff before joining Swansea a little over a decade ago.

And in his first appearance in a senior south Wales derby, Cooper scores the opening goal - and his dad is here to see it.

Image source, Huw Evans Picture Agency

Andy Robinson
Former Swansea City winger on BBC Radio Wales

Absolute brilliant finish from a player that has been so impressive since he has come in to the Swansea team, he is making his mark this season.

We talk about heroes, we could have another one on our hands.

If I were Ollie Cooper, I don't think I'd be booking any holidays during the World Cup.

And then out of nowhere a big chance for Luton.

Luke Freeman plays in a deep cross and Elijah Adebayo rises high to meet it with Daniel Bachmann unable to get there.

The ball loops up and over the crossbar and lands on the top of the goal.

Let-off for Watford.

The last time I saw someone fly through the air and do a punch like that, I was watching Roman Reigns at Clash at the Castle.

Cedric Kipre is a lucky, lucky, lucky man.

Image source, Getty Images

Massive controversy.

Matthew Sorinola crosses and Cedric Kipre literally punches the ball away.

That's a blatant penalty.

Cardiff have got away with one there.

Darren Bond couldn't see it.