Tottenham are in their worst run of league form since 2012; Jose Mourinho in his worst run of home league form, ever. Suddenly, Chelsea are no longer the capital's crisis club.
This was a second win for Thomas Tuchel, but the biggest so far, coming away from home against a fellow member of the elite. Not that such a word could currently applied to Tottenham. A third straight league defeat is their poorest run since a similar stretch under Andre Villas-Boas between November 3 and 17, 2012.
As for Mourinho, incredibly, this is the first time he has lost back to back home league games in his career.