Yan Valery is cautioned for bringing down Josh Murphy, who is causing the Southampton rearguard all sorts of problems so far.

The Bluebirds have a free-kick wide on the left-hand side...

Image source, PA

Jan Bednarek dwells a little too long on the ball and loses it to Callum Paterson, who plays in Josh Murphy.

The 23-year-old is one-on-one with Alex McCarthy but the Southampton custodian manages to get a strong hand to the ball to clear the danger.

Murphy should perhaps have got his shot off a little earlier there.

The game has settled down now after that frenetic opening to proceedings.

Murphy's earlier effort remains the closest we've come to a goal.

Image source, Getty Images

Sean Morrison has his name taken by referee Jonathan Moss for a tug on Pierre-Emile Hojbjerg's shirt.

Southampton fail to make the most of the resulting free-kick, though.

Best chance of the game so far.

Josh Murphy collects a pass deep inside the Southampton half, turns onto his left foot and fires a powerful shot towards goal which Alex McCarthy does well to palm to safety.

It was straight at the Southampton keeper but it was a decent save nonetheless.

Dafydd Pritchard
BBC Sport Wales at the Cardiff City Stadium

It's been a frenetic old start to this game.

While Southampton have kept the ball for longer periods, they've looked vulnerable whenever Cardiff break.

The Bluebirds are not the most subtle side in the Premier League but their wholehearted approach certainly gets their supporters on their feet and in good voice.

Very little to choose between the two sides at the Cardiff City Stadium so far.

Southampton started the brighter of the two teams but the hosts have started to find their rhythm in the last few minutes.

Image source, Reuters

What a vital challenge that was!

Matt Targett gives the ball away to Nathaniel Mendez-Laing, who bears down on goal.

He tries to find Harry Arter inside the area but Jan Bednarek makes a superb last-ditch tackle to prevent the ball from reaching the former Bournemouth man.

Another half-chance for Cardiff goes begging.

Sean Morrison does brilliantly to find a pocket of space on the edge of the area before pulling the ball back to Callum Paterson, who slices a shot wide of the mark.

Paterson just couldn't quite sort his feet out quickly enough.

A hopeful ball into the Cardiff box finds Harry Arter, who scuffs his effort straight at Alex McCarthy.

He's been heavily involved in the early stages.

Harry Arter goes in strongly on Mario Lemina but wins the ball.

A typically full-blooded challenge by the Cardiff midfielder, who has shaken off the effects of that earlier collision.

Charlie Austin goes close again as he deflects Jannik Vestergaard's long-range free-kick past Neil Etheridge's left-hand post.

Ralph Hasenhuttl applauds enthusiastically from the touchline.

Arter appears to be bleeding from the mouth but it doesn't seem to be anything serious.

He'll be back on in no time.

The Saints win a free-kick in a dangerous position after Harry Arter fouls Mario Lemina around 30 yards from goal.

Arter has stayed down and will need a bit of treatment here.

Dafydd Pritchard
BBC Sport Wales at the Cardiff City Stadium

The big question for Ralph Hasenhuttl on his Premier League debut: will it be a suit or a tracksuit on the touchline?

Well, the Austrian opts for a tracksuit and a light hooded puffer jacket. The wealthy dad's apres-ski look.

First sight of goal for Southampton as Matt Targett's cross finds Charlie Austin, whose flicked effort curls the wrong side of the far post.

Bright start by Ralph Hasenhuttl's side.

We're under way in Wales.

Image source, Reuters

Southampton

Southampton manager Ralph Hasenhuttl on Jurgen Klopp comparisons: "I was always a friend of his from football. He has a very proactive way of playing, and made a big mark in Germany. That kind of football really influenced my style.

"If I could do similar it would be fantastic for me, but that is too far away.

"We have other targets, goals and problems. The first target is to move as quickly as you can out of this relegation zone."

Cardiff City

Cardiff manager Neil Warnock: "Southampton have the fillip of a new manager, a spring in their step, and they'll all want to impress.

"He's done really well wherever he's been and that's the league we're in now as it's open to everybody.

"They've probably got the best squad in the bottom half of the division."

Paul Ince
Former England midfielder on Football Focus

What Ralph Hasenhuttl has done at Leipzig, he did very well. When you look at the Southampton squad they should not be in the position they are in, their performances have been okay, and they played well against Manchester United but conceded two.

When a new manager comes in, it has a positive impact on the players and should raise their performance by 20%. The game today will be really interesting.