The Stamford Bridge club had the chance to close the gap on the top four to just goal difference on Sunday, and they looked set to do just that after starting brilliantly against Everton.
However, the Toffees turned it on, in the second half to score twice, and Sarri was unable to explain Chelsea’s collapse after the half time break,
Faced with a crucial game in hand against Marco Silva’s side, who had not beaten a top-six team since January 2017, the visitors capitulated in the second half at Goodison Park.
It was a fourth away defeat in five games since the turn of the year – only Fulham have a worse record – and another example of Chelsea being unable to respond if they go behind.
After a first half where Eden Hazard hit the post and Ross Barkley bossed midfield despite constant boos from his former team’s supporters, Chelsea produced a second-half display that was inexplicable to Sarri, although Everton should be credited with a huge upturn in their performance.
The worrying aspect for Chelsea fans is that, after seeing their side lose one of nine games over the course of 90 minutes since their 6-0 drubbing by Manchester City in February, their poor away form has come back to haunt them and Sarri seems incapable of turning it around.
The loss leaves Sarri’s side in sixth place in the Premier League, three points behind fourth-placed Arsenal, and facing difficult questions as to whether Sarri is the right man to snap them out of their funk.