Manchester City have restored their barmy, 18-point lead at the top of the Premier League with a straightforward win over the reigning champions.
Chelsea seldom threatened and Pep Guardiola's side had to be patient, but they did enough to continue their march towards the EPL crown.
The Blues, meanwhile, have lost four out of their last five in the league and four on the bounce away from home for the first time in 14 years.
City have Champions League action to come against FC Basel in the week.
Antonio Conte's side have a week of soul-searching to do before playing Crystal Palace at Stamford Bridge next Saturday.