Everton slumped to another defeat in front of owner Farhad Moshiri as Jarrod Bowen's first-half double earned West Ham their first win in almost three months and piled the pressure on old boy Frank Lampard.
Under-fire Moshiri was attending his first game in 14 months, alongside the directors who missed last week's home defeat by Southampton because of what Everton said was a 'real and credible' threat to their safety, in a show of support for Lampard and defiance of his critics.
But his return didn't bring Everton any luck as Bowen scored twice in seven first-half minutes to take West Ham out of the relegation zone and bring some respite for manager David Moyes, who has been under intense pressure himself.