5 things we learned

City look sensational

City are for real. Pep Guardiola finally has the team and the squad to carry out his instructions and play the sort of football he craves. Even without key players such as Sergio Aguero and Benjamin Mendy, they can still take on the reigning champions and beat them in their own backyard.

De Bruyne haunts Chelsea

Chelsea should never have let Kevin De Bruyne go. The Belgian is now one of the best all round players in the Premier League, if not Europe. The Belgian has the sort of versatility that Chelsea are missing, a midfielder who is equally comfortable defending or going forward, able to tackle, pass and score when it matters.

Batshuayi has trust issues

Antonio Conte does not trust Michy Batshuayi. When Alvaro Morata limped off after 35 minutes, the Belgian was the obvious replacement, but Conte sent on Willian and pushed Eden Hazard up as a false-nine. It did not work. The young striker must know he is not considered up to the job. And if Morata is out for a few games, as is likely, he may be needed.

Few home comforts

Chelsea will struggle to retain their title if they cannot do better at home. Like Tottenham, they have looked superb away but they have taken only four points from four homes games. Remember when Jose Mourinho made this stadium a fortress? To have any chance of overtaking the Manchester clubs or Spurs, Chelsea need to do that — and quickly.

Great advert for the game

Even before the light rain in the second half that made the ball zip around even faster, it was played about at breathtaking speed by two teams capable of crisp one-touch passing. This is why the Premier League is so widely watched.