Chelsea missed the chance to return to the top of the Premier League as they were held to a scrappy goalless draw by Everton at Stamford Bridge on Sunday.
Maurizio Sarri’s side had the better chances at Stamford Bridge, but were frustrated on several occasions by Everton goalkeeper Jordan Pickford.
The result means the hosts have now stayed unbeaten in their opening 12 top-flight games for only the second time in their history.
It also secured a small piece of history for Sarri himself, who has become the first Premier League manager or head coach to avoid defeat in their first dozen games.
Prior to Sunday’s Manchester derby, Chelsea are third in the table, two points behind leaders Liverpool, who beat Fulham 2-0 at Anfield earlier.
Everton remain in ninth, but played their part in west London, with Icelandic playmaker Gylfi Sigurdsson forcing a smart save from Kepa Arrizabalaga on the hour.
However, their wait for a Premier League win at Chelsea now extends to 24 matches over as many years.
In what was at times a frustrating and disjointed game, the best chances fell to Marcos Alonso, who saw a volley saved by Pickford, before hitting the post with time running out.
Chelsea, who were armed with the fit-again Eden Hazard in their starting XI, introduced ex-Everton midfielder Ross Barkley from the bench for the closing stages.
But he was ultimately unable to make a telling impact in his 10 minutes or so on the pitch as the match fizzled out to a stalemate.