Neymar is fouled in the box by a lunging challenge from Angel Trujillo and the referee points to the spot, much to the fury of the away side.

Image source, AP

Levante come forward in search of that goal and win a corner through as superb block from Marc Bartra - earning his corn at both ends of the pitch - but Barca clear the set-piece with ease.

Almost 2-0 as Neymar pokes a shot just past the far post. It is a very different game now for Levante. They need to score but they don't want to be ripped apart as they have so many times at this ground.

As you were. Barca immediately on the attack but again the final ball is poor and Levante are back in numbers to crowd the home side out, clear and reform to repel another attack.

Image source, Reuters

No goals so far, but we are back under way with 45 more minutes left to find some.

Image source, AFP

In case you were not aware it's the big one the the Portuguese Primeira Liga at the Estadio do Dragao where leaders Porto face rivals Benfica.

It's goalless at half-time but it's an intense contest with former Real Madrid goalkeeper Iker Casillas much the busier in the Porto goal.

Casillas made a fine save from Luisao from a corner while Kostas Mitroglou has also gone close. Miguel Layun's long-range effort is the best that Porto have mustered so far.

Adam Byrne:  Barcelona always score a hatful vs. Levante at the Nou Camp but the one time I watch the match live - it's 0-0 at halftime!

John McEnerney: The FCB back four are there for the taking. A few high balls in to them and Levante may nick a goal. Need pressure on the deck & in the air.

A very disappointing first half, unless you are a Levante fan. Barca have dominated possession but have done little with the ball. Lionel Messi has had six of the home side's nine chances but hasn't been able to make the breakthrough.

Murmurs of discontent fill the Nou Camp as the players depart. If Barca are to make the breakthrough most expect them to they will need to be sharper and more clinical.

The job is simple for Levante in the second half: more of the same.

Image source, Reuters

Here comes Messi... over the bar. The second time the Argentine has curled an effort just over. It will be the last act of the first half.

Image source, AFP/GETTY

Trouble now for Levante. They give the ball away to Lionel Messi on the edge of the box and Verza is booked for dragging him back to concede a dangerous free-kick...

Image source, AFP/GETTY

You know it is not clicking for Barca when Lionel Messi over-hits a pass straight out of play. He tries to find Dani Alves down the right but succeeds only in conceding a goal-kick, prompting cried of frustration from the crowd.

The home side have had 73% possession so far, but have nothing to show for it.

The Barca players queue up to have a pop on the edge of the box, but when Neymar does finally decide to try his luck it is blocked by Juanfran, in his 39th year and the current oldest outfield player in La Liga. 

Soon after, Dani Alves' cross is headed over by Lionel Messi. Great leap, poor header.

Image source, Reuters

Levante cannot switch off, though. Lionel Messi's strike is palmed away by Ruben but Sandro cannot control the follow-up and puts his effort from inside the box wide.

Image source, AFP/GETTY

Levante are close to getting in again as Roger Marti charges forward and battles to the edge of the box, but his final pass (that would have given Nabil Ghilas just the keeper to beat) is cut out.

The away side fancy this now. They've earned the right to be a bit more ambitious.

Levante can also feel a bit hard done by. Twice they have been pulled up for offside by the officials, with replays showing the attacking player had timed his run to perfection.

Luis Enrique is prowling his technical area, arms folded, concern growing. The longer this remains goalless, the more Levante will grow in belief of nicking a famous first win at the Nou Camp.

You can already see signs of ambition from the men in yellow as the full-backs edge into Barca territory for the first time.

If Barca aren't careful, they could easily get caught on the break.

Ivan Rakitic crosses from the right, Marc Bartra meets it but gets under the header and puts it well over the bar.

Barca remain frustrated.