Alisson Becker errors see 10-man Liverpool go down 3-1 to Arsenal
Liverpool goalkeeper Alisson Becker was the villain of the evening after a brace of costly errors saw the Reds gunned down 3-1 by Arsenal.
The Gunners were without Gabriel Jesus, injured once more, but took the lead against Liverpool for the fourth Premier League encounter in a row.
They started well here, too, David Raya claiming a routine cross before bowling the ball out to Martinelli, whose pace was enough to see off Konate but Saka could not make telling contact as he met the cross with a diving header.
Arsenal have made a habit of scoring early against Liverpool, however, and that trend continued as Saka made amends in the 14th minute.
A great pass from Martin Odegaard found Kai Havertz in space, the German forward breaking through on goal only to shoot straight at Alisson, with Saka on hand to turn home the rebound.
Despite struggling with Arsenal's high press and failing to register a shot on target in the first half, Liverpool would go in level at the break as the unwitting Gabriel turned the ball into his own goal off his arm after Luis Diaz had outmuscled William Saliba.
The fortuitous equaliser shifted the momentum as Liverpool came out for the second half with a more cutting edge with both Diaz and Curtis Jones getting shots away.
Jakub Kiwior had replaced Oleksandr Zinchenko at the break for the home side, who reacted well as Odegaard saw a shot deflected just wide of Alisson's right-hand post
The hosts wanted a penalty when Havertz tangled with Alexis Mac Allister but referee Anthony Taylor was unmoved as VAR sided with the on-field official.
Arsenal would retake the lead soon after, with the Liverpool defence this time left red-faced as Alisson and Van Dijk left a clearance to one another, allowing Martinelli to collect and finish into an empty net.
Mac Allister flashed a shot wide as Liverpool looked to respond a second time having already rescued 19 points from losing positions this season.
The early exertion from Arsenal's forwards saw them tire as both Martinelli and Saka were replaced by Trossard and Reiss Nelson, respectively, for the closing stages.
But it was another substitute, Poland defender Kiwior, who missed a fine chance to make sure of the points when he headed straight at Alisson.
Klopp, too, had turned to his bench with Darwin Nunez, Harvey Elliott, Andrew Robertson and fit-again Thiago Alcantara all introduced in a forlorn attempt to salvage a result.
Instead, Konate was dismissed – booked a second time for blocking Trossard – before Trossard's low near-post shot flashed between the legs of Alisson to secure the points for Arteta's men.
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