Lamine Yamal finds an unmarked Robert Lewandowski inside the box.

But the Pole fails to hit the target as his shot is blocked inside the box.

Barcelona have scored in every game this season across competitions except a 3-0 defeat by Chelsea.

On that occasion at Stamford Bridge in November, the Premier League side had ended the La Liga side's 53-match scoring streak.

Will they be denied by Athletic tonight?

Hansi Flick turns to his bench for some inspiration and it's a triple change!

Raphinha, Fermín Lopez and Robert Lewandowski, wearing a mask after his facial injury, come on as Ferran Torres, Marcus Rashford and Dani Olmo are off.

Athletic would have thought they had opened the scoring!

But Oihan Sancet has a certain goal denied by a brilliant save from Joan Garcia.

The home side are piling the pressure on Barcelona right now.

Barcelona defender Pau Cubarsi brings down Inaki Williams, who is through on goal and would only have had goalkeeper Joan Garcia to beat.

The referee shows the yellow card to the centre-back but the Athletic players and the crowd are not happy as they want a red card for the defender for denying an obvious goalscoring opportunity.

Athletic's Oihan Sancet makes some space inside the Barcelona box but his shot across the goal is comfortably saved by keeper Joan Garcia.

You feel the attacker should have done better there.

Alejandro Rego is shown a yellow card for a stamp on Danu Olmo.

The Athletic midfielder will now miss their next match against Girona through suspension.

There is video assistant referee (VAR) check to see if his yellow needs to be upgraded to a red, but it's given the all clear quite swiftly.

A couple of early chances for Barcelona, who have come out for the second half with intent here.

Marcus Rashford's curling effort is stopped by a diving save from goalkeeper Unai Simon.

Then Rashford turns provider but Ferran Torres has a glancing header sail wide of the goal.

And we are back under way!

Oihan Sancet comes in for Selton Sanchez in the Athletic line-up.

Meanwhile, Barcelona introduce midfielder Pedri, who replaces Marc Bernal.

The players are back on the San Mames pitch for the second half.

And both sides are making some changes before we resume the business here.

Expected goals (xG) in the first half:

Athletic Club - 0.17

Barcelona - 0.05

Fair to say, it's not been the best halves of football we've seen!

Image source, Getty Images

Barcelona came into this game with a one-point lead against second-placed Real Madrid in the La Liga title race.

If the result here does not change, they will be within touching distance of their great rivals with 11 games of the season remaining.

Barcelona have had two shots in the entire first half, with both not on target.

Meanwhile, Athletic have had three with one on target. They've also hit the woodwork as Joao Cancelo almost scored an won goal early in the first half.

Image source, Getty Images

Nothing to separate the sides after 45 minutes of football!

Hansi Flick will demand improvements from his Barcelona players when they return to the pitch.

And Barcelona almost score!

Ferran Torres with a cheeky backheel to meet the corner kick but his effort rolls inches wide of the far post.

That's the closest Barca have got to an opener tonight.

Three minutes have been added on at the end of this first half.

Barcelona have a corner and they'll be pleased if they can find the breakthrough before the break!

Inaki Williams has the ball in the back of the net for Athletic but the celebrations are largely muted at San Mames.

That is because the home captain is offside by a fair few yards in the build-up.

Both goalkeeper Joan Garcia and Aymeric Laporte go for the ball inside the Barcelona box and there is another crash of the bodies.

Laporte comes out worse from the incident and Athletic will be temporarily down to 10 men as he receives some attention on the side-lines.