Arsenal continued their Premier League resurgence with a ruthless victory over strugglers West Brom at The Hawthorns.
Defender Kieran Tierney’s excellent solo run and curling finish put the Gunners in front in the first half, before the impressive Bukayo Saka rounded off a stunning passing move to make it 2-0.
Alexandre Lacazette added the third and fourth goals after the break – smashing in a rebound from Emile Smith Rowe’s shot before he was set up by Tierney.
It was Arsenal’s third league victory in a row after they had failed to win their previous seven.
West Brom, playing their fourth match under new manager Sam Allardyce, remain second from bottom and six points from safety.
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Arsenal boss Mikel Arteta said he wanted his players to “show confidence” at The Hawthorns, and they certainly did that in a dominant and eye-catching display.
Hector Bellerin forced Sam Johnstone into a save within two minutes after Pierre-Emerick Aubameyang broke down the left, and Saka tormented full-back Dara O’Shea on the opposite wing constantly during the opening half.
It was Saka’s ball that fizzed past the back post, inches away from the toe of Aubameyang, after the 19-year-old had got the better of O’Shea and hit it straight at Johnstone.
West Brom were being suffocated and Tierney’s burst of pace to get around Darnell Furlong, before bending it into the far corner, was the perfect way to open the scoring.
Saka made it 2-0 by rounding off a slick, one-touch passing move that former Arsenal boss Arsene Wenger would have been proud of.
West Brom could offer no response after the break either and Arsenal were 3-0 up on the hour when Lacazette eventually blasted in the rebound from a catalogue of errors by defender Semi Ajayi.
That was game over but Lacazette was allowed to add a fourth when he was left unmarked to divert Tierney’s cross into the roof of the net four minutes later.
Arteta, knowing the job was done, was able to bring off Saka and Emile Smith Rowe following impressive performances from both youngsters, w