Antonio Conte's future as Chelsea boss was cast into further doubt as his 10-men were thrashed 4-1 by Watford in the Premier League.
The Blues, who lost 3-0 at home to Bournemouth last week, were poor again at Vicarage Road and had Tiemoue Bakayoko sent off inside half an hour.
Troy Deeney scored a penalty in the closing stages of the first half but Chelsea stayed in the contest and equalised through a magnificent Eden Hazard goal.
However, Daryl Janmaat scored his own memorable effort to put the hosts back in front before Gerard Deulofeu - man of the match on his home debut - and substitute Roberto Pereyra netted to secure an emphatic win.