Better from Barcelona.

They work the ball nicely from side to side before Jordi Alba's cross from the left falls to Ilaix Moriba but his shot is deflected wide for a corner.

Ilaix Moriba is the latest player - and the first for Barca - to go into the referee's book for a foul on Mario Hermoso.

Atletico are pressing Barcelona high up the pitch and it's a struggle for Ronald Koeman's side to pass their way out.

Frustrating stuff for the hosts as we approach the hour mark.

Atletico have had 10 shots to Barca's four - and twice as many shots on target (six) - but, though his side are playing well and have every chance of winning this, Diego Simeone doesn't look too pleased on the touchline. It's hard not to feel pressure on days like this, of course...

Barca manage to earn a corner, but it's too close to Jan Oblak who steps off his line to punch clear.

It looks like it might not be long before Ronald Koeman calls on the services of Ousmane Dembele, who has been sent out to warm up.

Barca are enjoying a good spell in possession but Atletico are keeping them well away from Jan Oblak's goal.

No hanging around from Felipe.

He wastes no time in earning an early yellow card in the second half as he brings down Lionel Messi.

I wonder what the total number of yellow cards awarded for fouls on Messi is over the course of his career...

Away we go again!

Ronald Araujo replaces Oscar Mingueza for Barcelona.

Here come the players for the second half.

And what a significant second half it could prove to be in the tightest of title races.

Atletico Madrid’s Luis Suarez is playing his first game against former club Barcelona in La Liga today.

He has scored against each of the 30 opponents he has faced in La Liga to date...

Meanwhile, Barcelona’s Antoine Griezmann has failed to score in his 11 La Liga appearances against former club Atletico.

He has only failed to score against two opponents he has faced in the competition, with Cadiz being the other.

As its stands, Atletico remain two points ahead of Barcelona - but Real Madrid would be able to move level on points with the leaders with victory over Sevilla tomorrow.

A long way to go yet, though.

Barcelona end the first period in the Atletico half, but as has been the story so far they can't find a final pass in the final third.

It's goalless at the break.

Atletico are looking really confident in possession as we approach the interval.

Koke slips the ball to Angel Correa but he isn't on Correa's wavelength and the attempted return pass is light work for the Barca defence.

Four minutes of added time to come at the end of the first half.

Not to be upstaged, Yannick Carrasco goes on a brilliant run of his own and leaves the Barcelona defence all over the place as he twists and turns between challenges.

He makes his way into the box, but by the time he gets his head up for a shot there are too many Barcelona players blocking his path.

Great end to the first half.

A delightful sight, as Lionel Messi begins one of his effortless, mazy runs.

He evades a couple of Atletico players before setting himself for a shot on his left foot from the edge of the box. It's hit well, but it flies wide of the target.

Marc-Andre Ter Stegen does well to make a save from Yannick Carrasco's strike - and he does even better to recover sharply and bat away the ball just before Luis Suarez can head it into the goal.

Ter Stegen has been by far the busier of the two goalkeepers so far but Atletico haven't been able to make their good chances count.

A first yellow card of the game goes to Atletico substitute Saul Niguez, who is left with no option but to pull on the shoulder of Lionel Messi as the Barca forward begins to get away from him.

Atletico Madrid are on top at the moment!

Luis Suarez drives towards goal from the left and has a low shot from a tight angle blocked by the legs of Marc-Andre ter Stegen.

Koke and Angel Correa combine to halt the run of Clement Lenglet.

It's all getting a bit heated out there.