Postpublished at 49 mins
Cardiff City 0-1 Swansea City
Lots of possession for Swansea so far in the second half as the rain falls relatively gently in Cardiff.
Leaders Norwich earn third straight win over Blackburn to stay top
Bournemouth put five past Huddersfield, Deeney scores late Watford winner at Birmingham
Brentford win at Nottm Forest, Reading earn victory at QPR
Also wins for Luton, Middlesbrough, Brentford, Rotherham, Barnsley & Coventry
Swansea beat south Wales rivals Cardiff in early kick-off
Rob Stevens, Matt Newsum and Deepak Mahay
Cardiff City 0-1 Swansea City
Lots of possession for Swansea so far in the second half as the rain falls relatively gently in Cardiff.
Cardiff City 0-1 Swansea City
Joe Ralls is booked for a foul on Jay Foulton, Swansea play on and Jake Bidwell has a half chance, but Cardiff clear.
Cardiff City 0-1 Swansea City
We are back under way.
No changes to either side yet.
HT: Cardiff City 0-1 Swansea City
Dafydd Pritchard
BBC Sport Wales at Cardiff City Stadium
Swansea will be happy with that first half, even if their control of the match may have warranted more than one goal.
Cardiff, meanwhile, may want to consider making changes.
Manager Neil Harris has stuck with the same line-up and 4-4-2 formation for five matches in a row, which has served his side well with four successive wins before today.
Might he be tempted to shuffle his pack?
Striker Robert Glatzel came off the bench to score at Stoke on Tuesday, while wingers Josh Murphy and Gavin Whyte are his other attacking options among the substitutes.
Half time.
The Swans lead, deservedly, through Jamal Lowe's opener that squirmed through Alex Smithies.
Get yourself a brew and I'll see you soon.
Cardiff City 0-1 Swansea City
Two minutes of added on time.
Cardiff City 0-1 Swansea City
We've been busier than Freddie Woodman so far today.
Me tapping on here, you and your nervous energy watching this game.
Cardiff City 0-1 Swansea City
Kieffer Moore's header from a freekick drifts wide.
It's very hard to change a winning team, but is fatigue a factor here for Cardiff?
They are second to every loose ball.
Cardiff City 0-1 Swansea City
Swansea try to deliver a corner to Andre Ayew's feet, audacious but it doesn't come off.
Ayew then tries a shot from 25-yards that Alex Smithies easily saves. Audacious probably covers that one as well.
Cardiff City 0-1 Swansea City
I've continually told you Swansea have been the better side.
Alternative viewpoint, Swansea have been so much the better side, they will surely be disappointed to only lead 1-0.
As bad as Cardiff have been, it only takes a second to score.
Cardiff City 0-1 Swansea City
Dafydd Pritchard
BBC Sport Wales at Cardiff City Stadium
Although Cardiff are slowly growing into this game, Swansea still seem to be in control.
And while we've become used to matches without supporters, this derby still feels so strange.
Hearing the players and coaches scream and shout without the backing of a hostile crowd is like listening to a recording of an album with the sound of all the instruments removed.
Cardiff City 0-1 Swansea City
We've just had some pushing and shoving, right in time for panto season.
Kieffer Moore and Marc Guehi are considered the culprits and both are booked.
Cardiff City 0-1 Swansea City
Slick Swansea passing as the visitors again find an opening, but Jamal Lowe's cross is really poor and Sean Morrison snuffs out the danger.
A graphic on the TV has just shown Andre Ayew and Jamal Lowe have had over 40 touches, Kieffer Moore and Mark Harris have had 13.
Speaks volumes.
Cardiff City 0-1 Swansea City
Sean Morrison is winning a few headers at set-pieces, but Swansea look comfortable.
Neil Harris may be pondering a change of shape as Swansea's midfield three are the dominant force in this game.
Cardiff City 0-1 Swansea City
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Cardiff City 0-1 Swansea City
Midway through the first half and Swansea are ahead and you'd have to say, deservedly so.
Cardiff City 0-1 Swansea City
Harry Wilson looms over the ball.... but he fires wide.
Would Ryan Bennett have been booked for that if he wasn't already on a yellow card?
I think I know what Neil Harris would say.
Cardiff City 0-1 Swansea City
All happening!
Connor Roberts concedes possession and Ryan Bennett fouls Kieffer Moore just outside the area.
Cardiff City 0-1 Swansea City
So so close to 2-0.
Matt Grimes cuts inside and fires at goal and and Alex Smithies turns the ball onto the post and away.
It's a good save from Smithies.
Cardiff City 0-1 Swansea City
Andre Ayew outstrips Sean Morrison who brings him down.
Easy for the referee.