I only saw the highlights, but wow, City looked like an express train smashing through these flimsy straw bales on the track, that is, the Chelsea defence. I wondered what that was about with Costa and Fernandinho, he absolutely clattered him. Well, Costa puts it about somewhat, maybe payback.
I'm curious how Chelsea will regroup, probably buy some more players. City are certainly laying down a marker, but it's early doors as Big Ron used to say.