Arthur delivers, but it's overhit and goes harmlessly out of play for a goal-kick to Osasuna.
90' +1
Moncayola gets yellow.
Barcelona can't get the ball out of their half as Osasuna come forward looking for a winner of their own, but the move breaks down and Barcelona restart with a goal-kick.
Moncayola is shown a yellow card - Osasuna's third of the game - for impeding Arthur. Barcelona win a free-kick.
88'
Perez receives a pass in behind, but he miscues his touch and Ruben is able to come off his line and claim the ball.
86'
Barcelona are pushing high up the pitch searching for a winner here. But again they're struggling to create anything and Osasuna earn a goal-kick.
82'
A. Vidal enters the game and replaces F. de Jong.
Piqué gets yellow.
De Jong is taken off, with Vidal coming on to inject some battering ram energy into the Barcelona midfield.
Pique is shown a yellow card.
81'
Penalty goal scored by Roberto Torres for Osasuna!
GOAAAL! IT'S 2-2!!! Torres grabs a brace! He sends Ter Stegen the wrong way and slots his penalty into the bottom-right corner! Game on for the final few minutes!
80'
Osasuna are demanding a penalty! They think Pique has handled the ball in the box!
78'
Juan Villar enters the game and replaces Brandon Thomas.
Osasuna make their final change, taking off Brandon for Villar.
73'
Here comes Fati on the break, feeding Griezmann out on the left. But the Frenchman decides to slow the move down and pass backwards. There weren't any options in the box in fairness.
Minute
Description
72'
Busquets evades a challenge superbly - using his body to shield the ball - but plays a really poor pass straight back into an opponent's path. It's lucky for him that they can't create a chance from it.
71'
Moncayola enters the game and replaces Fran Mérida.
Osasuna make another change, bringing on Moncayola for Merida.
70'
Arthur manages to find a throughball into Griezmann, but Ruben is off his line quickly to sweep it up. It's the right idea and Griezmann seems to be making more of these runs in behind.
69'
Barcelona are back defending their own penalty area at the moment, though Pique manages to clear the ball with a long pass down the pitch.
67'
This has been a much better spell for Barcelona - Fati and Arthur clearly making a difference. It's not just the goals, though. Fati has offered a more direct threat on the wing - something a little different for Vidal to deal with - while Arthur passes the ball far better than Roberto and the difference has been noticeable.
65'
Rober Ibáñez enters the game and replaces Rubén García.
Ruben Garcia comes off for Ibanez. It's an attacking move from Arrasate.
64'
Arthur has scored a goal for Barcelona! Assist by Carles Pérez.
GOAAAL! BARCELONA LEAD 2-1! It's supersub Arthur with a wonderful finish! He receives the ball with Osasuna defenders all around him, drops his shoulder, shifts the ball onto his right to create space and curls his effort into the far corner, well out of Ruben's reach.
Well, Arthur's goal will steal the thunder from Perez again, but don't knock it! He's got two assists this game and has been one of the livelier Barcelona players.
63'
Alba's neat backheel sets Fati away out on the left and he manages to retain possession under pressure, with the ball now recycled among the defenders.
55'
Can Osasuna find another goal? They've been solid defensively since they went ahead, but it's been to the detriment of their pressing, which saw them score in the first place. Is there a better balance to be found perhaps?
53'
Arthur enters the game and replaces Rafinha.
Fati only made his Barcelona debut six days ago - and now he's scored what could become a key goal for the club! What a dream week it's been for him.
Rafina is next to come off, with Arthur coming on. He'll add some extra creativity to a midfield that's looked somewhat lacklustre.
51'
Ansu Fati has scored a goal for Barcelona! Assist by Carles Pérez.
Perez does well to pick Fati out among the Osasuna centre-backs, but this goal is all about the teenager!
GOAAAAAAL! FATI EQUALISES FOR BARCELONA! The 16-year-old scores his first goal for Barcelona! It's a nice goal as well, leaping in front of Vidal to guide Perez's cross into the bottom-left corner. What a moment that is for the teenager - and what a big goal it could prove to be.
50'
Osasuna break at speed, with Avila slipping Brandon in behind. The striker then plays a quick ball into Ruben Garcia, who returns the pass back to Avila - the original architect - but his touch lets him down and Barcelona recover possession. That could have developed into a chance.
46'
Ansu Fati enters the game and replaces Nélson Semedo.
Fati enters the action! He comes on for Semedo. This could see Roberto drop to right-back and Rafinha move into midfield to make space for Fati in the front three.
KICK OFF: Barcelona - who could end the weekend six points off the lead if results go against them elsewhere - get us underway in the second half.
45' +4
Alba goes down in the box after a challenge from Vidal. He's appealing for a penalty, but the referee waves play on. It doesn't look like there was much contact at all.
HALF-TIME: OSASUNA 1-0 BARCELONA.
45' +2
Into four minutes of added time in the first half and Barcelona don't look any closer to equalising. They haven't been purposeful with their possession and their moves tend to break down once they reach the last third. It's the final pass they're lacking.
43'
Brandon Thomas gets yellow.
The referee shows the fourth yellow card of the game - it's for Osasuna's Brandon after he treads on Lenglet's foot.
41'
De Jong drives forward the ball forwards with purpose, but he doesn't have an option once he reaches the final third and ends up losing possession, which is not like him.
39'
Vidal tries to pick out Avila with a long pass, but he's well-marked by Pique and the centre-back heads the ball away without an issue.
37'
F. de Jong gets yellow.
De Jong is the second Barcelona player to be shown a yellow card this half - they've now had the same number of bookings as shots on target! It's a bad foul he's committed, lunging at the goalscorer, Torres.
36'
Vidal now plays a pass into Alba, only for the left-back to return the ball to its origin. And play is now spread to the right wing to see if there's a better opening there.
34'
This has been rather uninspiring so far for Barcelona. As expected, a lot of possession, but no penetration. No one has been able to pick a key pass or send a forward in behind - it raises questions about Valverde's decision to leave Arthur on the bench.
32'
Sergi Roberto gets yellow.
Barcelona get the game restarted, De Jong retaining possession and looking to pick an opening. There doesn't seem to be one though, and he decides to pass laterally into Alba.
Roberto is shown a yellow card - the referee thinks he was too physical during a duel.
30'
Cooling break! A chance for the players to rehydrate and the managers to pass on some feedback. Valverde certainly with more to say given the scoreline. For Jagoba Arrasate's Osasuna, it's more of the same.
26'
He's up shortly after and Barcelona restart their attack looking to breakdown what's proving to be quite a stubborn Osasuna back four.
25'
The referee stops play as Perez is down with an injury after a collision with Semedo. They were both challenging Avila in the air.
23'
Perez tries to create something by cutting inside - beating his marker with a burst of speed - and playing a throughball into the box, but no one follows it up and the ball rolls harmlessly into Ruben's arms.
21'
Barcelona are back in possession and Busquests plays a pass into Alba on the left. The left-back darts inside and fires a low cross towards Griezmann, but it's intercepted.
19'
Another corner for Osasuna - their third of the game. They take it short this time, but the cross is too long and Barcelona clear. It's a poor clearance though, and Osasuna come forwards once more.
17'
Barcelona are really struggling to string any sort of attacking phase together! Griezmann is the latest to try something - he spreads play wide to Alba, who has space to run into, but the move breaks down.
13'
Fran Mérida gets yellow.
Some respite for Barcelona as Avila wins a free-kick inside the centre circle - from a Busquets foul - but Merida decides to argue with the referee and is shown a yellow card for his effort.
12'
Rafina tries to create an opening in the left-hand channel, but again Barcelona are forced backwards by the Osasuna right-back Vidal.
11'
Here come Barcelona looking to repond to going behind inside 10 minutes, but a solid press from Osasuna force them back towards their own half.
7'
Roberto Torres has scored a goal for Osasuna! Assist by Brandon Thomas.
Brandon does well to keep the attack flowing down the far side of the pitch, shows off some tidy footwork to beat Alba, then gets his head up and picks out Torres with a perfectly-weighted cross.
GOOAAAAAAL! OSASUNA LEAD 1-0!!! Torres is unmarked at the back post and hits a left-footed volley back across goal and well past Ter Stegen! He hits it with such power, the keeper wasn't going to stop that!
6'
The home side's pressure is paying off though, and this is the second throw they've won in Barcelona's half against Semedo. They try to get in behind and win a corner out of it.
5'
Pique now with a long diagonal pass to Rafina, but Vidal is alert and steps up to head it away.
4'
De Jong switches play wonderfully to Rafinha out on the left wing and he passes inside to retain possession. Barcelona are looking to set up camp in Osasuna's defensive third.
2'
Osasuna have a corner early on here, but it's cleared without any trouble.
1'
KICK-OFF: After a beautifully observed minute's silence for Luis Enrique's daughter, Xana, Osasuna get us started.
Welcome to our live coverage of the LaLiga fixture between Osasuna and last year’s top-flight champions Barcelona.
It’s been a positive start for Osasuna so far - one win and one draw since they were promoted as Segunda Division champions. In fact, they’re one point and three places above Barcelona in the table! The champions got their first points last weekend, responding to a shock defeat at Athletic Bilbao in the season opener. Nothing less than a win will do for Ernesto Valverde today.
OSASUNA XI (4-4-2): Ruben Martinez; Nacho Vidal, Aridane Hernandez, David Garcia, Pervis Estupinan; Roberto Torres, Oier Sanjourjo, Fran Merida, Ruben Garcia; Chimy Avila, Brandon.
SUBS: Adrian Lopez, Roberto Ibanez, Sergio Herrera, Juan Villar, Facundo Roncaglia, Darko Brasanac, Jon Moncayola.
BARCELONA XI (4-3-3): Marc-Andre ter Stegen; Nelson Semedo, Gerard Pique, Clement Lenglet, Jordi Alba; Sergi Roberto, Sergio Busquets; Frenkie de Jong; Carles Perez, Antoine Griezmann, Rafinha.
SUBS: Inaki Pena, Arthur, Moussa Wague, Ivan Rakitic, Samuel Umtiti, Arturo Vidal, Anssumani Fati.
The teams are out and kick-off is on the way!
It's not as if Valverde has options on the bench either. Dembele injured his hamstring, which means Fati - the 16-year-old academy graduate - is in the squad again. Maybe he can add some energy, excitement and unpredictability in attack. Perhaps Arthur will come on for Roberto and add another creative passer to midfield. Whatever the choice, Valverde needs to find some inspiration from somehwere.
That's it from us for live coverage of Osasuna's draw with Barcelona! Thank you for following and, until next time, goodbye!
What a performance from Osasuna, though! They earned their point today and they remain undefeated on their return to LaLiga. For now, they're up to fourth in the table and it's Real Valladolid up next for them. Barcelona are a point and three places behind in seventh and this result now heaps pressure onto an already tough match against Valencia next Saturday.
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