Arsenal piled the pressure on Everton manager Ronald Koeman with an embarrassingly easy victory that pushed the Toffees into the Premier League relegation zone.
Everton, with only two league wins this season, were given early hope when Wayne Rooney re-enacted his famous goal against Arsenal from 2002 as a 16-year-old with a brilliant 20-yard curling finish past Petr Cech.
It was to prove a false dawn as only Everton keeper Jordan Pickford kept his side on terms before Nacho Monreal reacted to a rebound from his save to draw Arsenal level five minutes before the break.
Arsenal never looked back and it was no surprise when the outstanding pair of Alexis Sanchez and Mesut Ozil combined for the German to head past the besieged Pickford eight minutes after half-time.
Everton collapsed in humiliating fashion, Idrissa Gueye making matters worse when a senseless tackle on Granit Xhaka earned him his second yellow card.
Alexandre Lacazette and Aaron Ramsey increased the agony for Koeman and Everton with goals in the final 16 minutes.
Even when Everton substitute Oumar Niasse pulled one back in stoppage time, there was still time for Sanchez to end a slalom run with a fifth to bring the curtain down on a desperate day for Koeman, who is now surely fighting to save his job.
Comments