
Palace took the lead in the 16th minute after Ben White needlessly fouled Zaha.
Conor Gallagher swung his free-kick towards the far post, where Joachim Andersen headed it back across for Mateta to nod home from six yards for his sixth goal this term.
If that was a sloppy goal to concede, there was worse to come for Arteta eight minutes later.
Andersen’s long pass should have been easy for the Arsenal rearguard, but Gabriel made a hash of his attempt to intercept, completely missing the ball as Ayew eluded the dozing Nuno Tavares to score with a composed finish from the edge of the area.
The Ghana forward’s second goal this season left Arteta scratching his head in disbelief.
Without Scotland left-back Kieran Tierney due to a knee injury, Arsenal’s defence was in disarray and Zaha swept through to tee up Mateta for a chance that Aaron Ramsdale saved at full stretch.
Arsenal didn’t manage an effort on target into the final seconds of the half and even the Gabriel’s tame header was straight at Vicente Guaita.
Out-fought and out-played in the first half, Arsenal needed an immediate response after the break but Bukayo Saka’s penalty appeal was waved away after he was bundled over by Cheikhou Kouyate.
Although there was more urgency about Arsenal in the second half, they still lacked a cutting edge.
Emile Smith Rowe shot straight at Guaita with the goal at his mercy before Martin Odegaard fired wastefully wide from Saka’s cross.
Arsenal were punished for their profligacy in the 74th minute as Zaha’s raid prompted Odegaard to concede a penalty as he clipped the forward’s ankle.
Zaha dusted himself down and converted the spot-kick with ease, sending Ramsdale the wrong way to leave Arsenal’s top four bid in the balance. (AFP)



























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