Tomas Soucek scored the first English Premier League goal of 2021 as West Ham beat Everton 1-0 at Goodison Park.
Soucek struck for the visitors in the 86th minute to end Everton's streak of four league wins.
The Toffees remained on 29 points with West Ham 10th on 26. Leaders Liverpool have 33 points.
With fans not allowed due to coronavirus restrictions, West Ham's David Moyes registered his first win at Everton as opposition manager.
The Scot had lost all four previous appearances by an aggregate of 12-1 on a ground where he had success until leaving Everton for Manchester United in 2013.
Having done their primary job of not conceding, the Hammers benefited from some good fortune when Aaron Cresswell's mis-hit shot deflected off Yerry Mina and into the path of Soucek, who could not miss.
The game got off to an inauspicious start for West Ham when goalkeeper Lucasz Fabianski was injured in the warmup and had to be replaced by Darren Rudolph before kickoff.