Pep Guardiola suffered his heaviest league defeat as a manager as Everton dealt Manchester City a serious title blow with a 4-0 win at Goodison Park.
Teenager Tom Davies and debutant Ademola Lookman wrapped up a stunning Everton performance with late goals after earlier strikes from Romelu Lukaku and Kevin Mirallas.
The loss was City’s fifth of the Premier League campaign and left them 10 points behind leaders Chelsea.
It also proved an unhappy first return to Everton for City defender John Stones, who was booed intermittently following his £50 million transfer last summer.
City started well but lost their sparkle after falling 2-0 down early in the second half and then capitulated alarmingly in the latter stages.