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• Emery: Arsenal 'test' will help Villa understand who they are

  Unai Emery believes Arsenal was a "test" for Aston Villa to understand where they are in the season and how they can build on that going forward.

  Second-half strikes from Leandro Trossard and Thomas Partey earned the points for Arsenal in a 2-0 win at Villa Park on Saturday.

  However, it could have been a much different story for Emery's men, as Ollie Watkins missed a glorious chance in either half, while Amadou Onana struck the bar.

  While the Spaniard was left frustrated by the result, he was left optimistic by the performance in their first home game of the season.

  "You have to accept Arsenal they are more experienced, more mature. They are strong," Emery told Sky Sports. "Today was a test for us to understand who we are.

  "We competed, we faced them, we could have won, drawn or lost. I think it's going to give us a lot of information about the team, the squad and players and how we can close this week in the transfer window and finish this month playing Leicester.

  "I think the way we played today will be a good way to understand how we can process our style, our competitive way.

  "We created three very good chances, like them, but our chances were more clear. We competed like we could do; I have to be proud of the players. We have to keep building. Not the result but the way we did [play] this is what we want."

  Watkins fired a close-range effort wide in the first half before being denied by a wonderful save by David Raya in the second when he tried to turn in the rebound of Onana's strike.

  The England international is yet to score this season, having failed to manage a single shot in their opener against West Ham, but Emery maintains his confidence in the striker to get back to the form that saw him net 19 goals last season.

  "The most important thing is to create chances, of course, he is not finishing them all, but I am very happy how he progressed from the first match at West Ham," the Spaniard added.

  "His progress has been performing better and creating chances. Ollie Watkins, chances like that in the future, he will score."

• 'Unbelievable' Raya save changed Arsenal momentum, says Arteta

  Mikel Arteta believes that David Raya's save to deny Ollie Watkins changed the momentum during Arsenal's 2-0 victory over Aston Villa on Saturday. 

  The Gunners maintained their winning start to the Premier League season through second-half strikes from substitute Leandro Trossard and Thomas Partey at Villa Park. 

  But the encounter could have taken on a different complexion had it not been for a crucial intervention from Arsenal's goalkeeper eight minutes after the interval. 

  Amadou Onana saw his deflected effort come back off the crossbar and into the path of Watkins, who looked certain to get his tally up and running for the campaign. 

  However, Raya produced a remarkable instinctive save to deny the Villa striker, who had spurned another golden opportunity in the opening 45 minutes. 

  "We had to change momentum, we had a 10-minute gap when we didn't get the rhythm, and they were on top," Arteta told Sky Sports. 

  "They had the big chance and David made an unbelievable save, and it was the magic moment of the game. 

  "We conceded really little, and it's a big credit to the team as it is a difficult place to come, but when we needed him he was there, and he made a terrific save."

  Arteta was also full of praise for Trossard, who emerged from the bench to net the game's opening goal just 110 seconds after being introduced. 

  The Belgian produced a fine finish from the edge of the area after good work from Bukayo Saka, placing a low right-footed effort beyond the grasp of Emiliano Martinez.

  It was Trossard's 14th goal for the club and his sixth as a substitute, while he also registered the most shots (three) of any Arsenal player in his 25-minute cameo.

  "The competition is big, we have great players in each position, and they are going to have to accept that," Arteta said.

  "We have a huge season in front of us, a long one, and you need players to impact.

  "He did that last year when he started and when he was a sub, and he has given us a headache for next weekend."

• Barcelona 2-1 Athletic Bilbao: Lewandowski strikes late to maintain winning start

  Robert Lewandowski smashed home a rebound to earn Barcelona a 2-1 win against Athletic Bilbao in an absorbing LaLiga clash on Saturday.

  A deflected strike by teenager Lamine Yamal in the 24th minute gave Barca the lead.

  The visitors levelled in the 42nd minute when Oihan Sancet struck home from the penalty spot after defender Pau Cubarsi fouled Alex Berenguer inside the box.

  Lewandowski, who had struck the woodwork in either half in his attempts to double Barcelona's tally, scored the winner in the 75th minute from a rebound by the goalkeeper, striking a first-time effort to give the hosts their second win in as many games.

  Barcelona are level with Celta Vigo at the top of the LaLiga standings with six points. Athletic are 15th with one point from two matches.

  Data Debrief: Young guns star

  Just like in their opening match, it was Lewandowski who was the match-winner for Barcelona, with his 75th-minute goal on Saturday proving the difference.

  However, it was Yamal who proved the standout performer for Barcelona. Among players born since 2005, only Mathys Tel (17 - 12 goals, five assists) has more goal involvements in the top five European leagues than him (12 - six goals, six assists, the same as Desire Doue, seven and five).

  Meanwhile, Sancet became the third-youngest Athletic player to reach 25 goals in LaLiga in the 21st century at 24 years and 121 days, behind Fernando Llorente and Iker Muniain.