Arsenal returned to the top of the Premier League with a 3-1 win over Chelsea at the Emirates Stadium as the visitors slumped to a sixth consecutive loss under Frank Lampard.
Arsenal responded by producing a magnificent first-half display, racing into a 3-0 lead inside 34 minutes courtesy of two crisp strikes by captain Martin Odegaard and a scrambled finish by Gabriel Jesus.
Chelsea, who fell to a sixth straight loss under interim manager Frank Lampard, were thankful to goalkeeper Kepa Arrizabalaga that the scoreline was not even more embarrassing and even pulled one back through Noni Madueke.
Arsenal, however, were never in serious danger and are now two points clear of City having played two games more than their title rivals.