Well, Liverpool are top of the table tonight, and are still unbeaten the only remaining team in that position, with an excellent display today, while Manchester City have suffered their first defeat of the season - they are not invincible, just extremely good.
An excellent victory for Chelsea, who stuttered a little recently, but Sarri clearly has the vision to take them where he wishes to try to take them; the challenge here will be for Chelsea's hierarchy - not known or renowned for patience - to have faith in him and not demand immediate results but give him sufficient time to build and craft the team according to his vision.
And, as of now, Arsenal are in fourth place.
And yes, we now also have a genuine title race beginning to take place.