Barcelona were completely in control in the first half, taking the lead thanks to a rebounded end from Mariona Caldentey (32), before Alexia Putellas returned home from Asisat Oshoala’s reduction (43).
Against his former club, Oshoala slipped Barca 3-0 at the start of the second half (47) before Arsenal found some rhythm and recovered a goal thanks to Frida Leonhardsen Maanum, coming home to the post rear (74).
Sub Lieke Martens took the score to 4-1 with a skillful end of the game (84), while Putellas saw a stoppage penalty saved by Manuela Zinsberger after Jordan Nobbs fouled her in the box. .
Barca managed a total of 35 shots on Arsenal’s goal in the game, with Arsenal’s Zinsberger making 10 saves on a humiliating night for the Gunners, albeit with a much improved display in the second half.
How Barca blew up the Gunners
Barca have proven why they are European champions and favorites to retain their crown this year in a dominant first half, recording 19 shots on goal to none for Arsenal.
They camped in Arsenal’s defensive third for most of the half, passing close by Caldentey and Ana-Maria Crnogorcevic, both of whom forced good saves from Zinsberger.
But the hosts had to wait just past half an hour to take the lead thanks to Caldentey, who leaped up after Zinsberger stopped Oshoala’s effort from the edge of the box, pulling himself together before heading home.
And it was 2-0 before the break as Oshoala came easily to the signing, before stepping back for Putellas to transform into the net.
Barca picked up where they left off in the second half as Caldentey faced Oshoala on goal, before the Nigerian went 3-0 under Zinsberger.
Arsenal improved after bringing in Tobin Heath, Nikita Parris and Caitlin Foord after the third goal, and secured one with a rare attack as Maanum converted at the far post of Heath’s free-kick, moments after Parris had saw a clear effort. line.
But it turned out to be a fleeting moment as Barcelona secured their fourth, Martens brilliantly dominated Zinsberger with Patricia Guijarro’s through pass.
It should have been five in stopping time when Nobbs tripped Captain Putellas into the box, but his own kick was saved well by Zinsberger to his left to keep respectable damage limitation.
Arsenal now host Everton Women at 3 p.m. Sunday in the WSL, live on Sky Sports Premier League, ahead of their second Champions League clash at home against Hoffenheim on October 14 at 8 p.m. in Borehamwood.