Postpublished at 45+2 mins
Cardiff 0-0 Swansea
Our last two pundit posts tell the whole story.
Both attacks have been well shackled and starved of service.
Substitute Ollie Tanner scores minutes after coming on to give Cardiff lead
Aaron Ramsey doubles Cardiff's advantage from the penalty spot to seal win
Swans still looking for first win under new boss Michael Duff
Bluebirds earn second Championship win this season from six games
Swansea had won the past four meetings of the two rivals
Ian Mitchelmore
Cardiff 0-0 Swansea
Our last two pundit posts tell the whole story.
Both attacks have been well shackled and starved of service.
Cardiff 0-0 Swansea
Iwan Roberts
Former Wales striker on BBC Radio Cymru
Cardiff's attackers haven't been given any service so far, but Ugbo has to do a lot more.
Cardiff 0-0 Swansea
Owain Tudur Jones
Former Swansea City and Wales midfielder on BBC Radio Cymru
Swansea's attackers haven't had a sniff so far!
Cardiff 0-0 Swansea
Kristian Pedersen takes a knock right at the end of the opening half.
He's seen to by Swansea's medics.
We'll have three minutes of additional time.
Cardiff 0-0 Swansea
Swansea are just gathering a bit of momentum now.
They get the ball high up the pitch on a few occasions in quick succession but can't do anything to test Jak Alnwick.
Cardiff 0-0 Swansea
Dafydd Pritchard
BBC Sport Wales at Cardiff City Stadium
This game hasn't quite lived up to the rabid atmosphere of the opening exchanges.
Fans are leaving their seats early to get their half-time teas, and you can't really blame them.
Cardiff 0-0 Swansea
Owain Tudur Jones
Former Swansea City and Wales midfielder on BBC Radio Cymru
What has really surprised me is how much Swansea have changed, good or bad, we're not sure yet under Michael Duff but the football we've seen in the past under Russell Martin, the Swansea way is not what we'll be seeing under Duff.
Cardiff 0-0 Swansea
The quality in the last few minutes has been very poor to say the least.
Into the final stages of the first-half and we're still goalless with very little goalmouth action to discuss...
Cardiff 0-0 Swansea
Aaron Ramsey puts Nathan Wood under real pressure in the corner.
It's the Welshman who is penalised for a foul.
He's not happy with that decision one bit.
Cardiff 0-0 Swansea
Danny Gabbidon
Former Cardiff City and Wales defender on BBC Radio Wales
Siopis is a very intelligent player.
Cardiff 0-0 Swansea
This has been far from a classic.
Defences are coming out on top so far with precious little scoring opportunities at either end.
A long way to go, of course.
Cardiff 0-0 Swansea
Iwan Roberts
Former Wales striker on BBC Radio Cymru
Cardiff's defence has been the third worst in the Championship, Swansea have been the fifth worst - I was expecting goals tonight!
Cardiff 0-0 Swansea
Danny Gabbidon
Former Cardiff City and Wales defender on BBC Radio Wales
Swansea look really rigid.
It's almost the polar opposite to what we're used to seeing from these two teams.
I think Cardiff look really fluid and connected in possession compared to Swansea at the moment.
Cardiff 0-0 Swansea
It's been a right old battle so far.
No shots on target from either side.
Cardiff 0-0 Swansea
Kristian Pedersen tries to find Josh Key with a crossfield pass, but it goes well out of way.
Half-an-hour gone here and there haven't really been any clear-cut chances for either side.
Nathan Wood clatters (legally) Karlan Grant to win the ball.
The away fans enjoyed that.
But it's a Bluebirds throw-in.
Cardiff 0-0 Swansea
Perry Ng causes worry in the Swansea box again with another delivery from the right.
Josh Tymon is on hand to take the sting out of things though as Swansea look to calm proceedings down after a decent spell for the home side.
Cardiff 0-0 Swansea
Danny Gabbidon
Former Cardiff City and Wales defender on BBC Radio Wales
I think both managers will be content [with the performance] so far; it's been pretty even.
I'm so used to seeing Swansea dominate the ball, dominate the possession. We haven't seen much of that so far.
Cardiff 0-0 Swansea
Cardiff have a good spell on the ball and they stay patient.
Perry Ng crosses from the right, but Kristian Pedersen volleys clear.
The Bluebirds will be pleased with things so far, you'd feel.
Cardiff 0-0 Swansea
Matt Grimes volleys goalwards from distance, and Jerry Yates can't quite stretch to head it back on target.
A better spell for Swansea, but they are yet to have a shot on target.
Cardiff 0-0 Swansea
Owain Tudur Jones
Former Swansea City and Wales midfielder on BBC Radio Cymru
Ramsey hasn't seen a lot of the ball so far but he's always ready.
This is a huge reason to why he has returned.