A rampant Arsenal side punished Chelsea's grave defensive errors to end Arsene Wenger's five-year hoodoo against the Blues on Saturday, prevailing 3-0 at the Emirates.
The Gunners had not beaten their west London rivals in nine league games and failed to score in their last six meetings, yet the visitors could hardly have been more accommodating in helping to end that run.
Antonio Conte used a low defensive block aimed at eliminating spaces between the lines, but saw his plan undone by Gary Cahill gifting Alexis Sanchez the opener. The writing was on the wall when the hosts cut through his team with a slick move for 2-0, and the Italian was handed further material for what will surely be a long and sombre video review session when N'Golo Kante was caught too far upfield for the third goal.