Romelu Lukaku proved the thorn in West Ham's side once again with a late winner in Everton's 2-1 triumph at Upton Park on Saturday.
Romelu Lukaku again proved to be West Ham's nemesis as his stoppage-time header earned Everton a dramatic 2-1 Premier League win at Upton Park.
The goal was the Belgian striker's sixth in as many appearances against the London club, but the away side was forced to earn the points the hard way after falling behind to a 62nd-minute strike from Stewart Downing.
Leon Osman's acrobatic close-range volley got Roberto Martinez's men back on level terms within six minutes and, just as the two mid-table sides seemed destined to share the spoils, Lukaku popped up to bag his 20th goal of the season.
With both sides in contention to claim the additional UEFA Europa League place made available via the Fair Play Award, the card count was almost as relevant as the score and the hosts did at least shade that contest by picking up two yellows to the visitors' three.
The result extends Everton's unbeaten league run against West Ham to 14 games, with the Merseysiders climbing into the top half at the expense of Sam Allardyce's side.
The first chance of the afternoon fell Everton's way after five minutes when Osman’s 20-yard snap-shot was palmed wide by Adrian and, from the resulting corner, John Stones fired wide from close range.
In keeping with what developed into a very evenly fought first period, West Ham then responded by applying some pressure of its own and was unfortunate not to earn a penalty when Seamus Coleman appeared to handle a cross from the overlapping Aaron Cresswell.
Downing did at least manage to keep his rasping 32nd-minute drive on target, but Tim Howard was equal to it and, just before the break, Allardyce's side was grateful to substitute Reece Burke, whose timely challenge halted James McCarthy in his tracks as he surged into the box.
Everton continued in a similar vein at the start of the second half. Lukaku came within inches of breaking the deadlock with a superbly struck curling free kick, but the Toffees were then dealt a sucker punch when Downing fired the home side in front.
Osman's response was not long in coming, however, and, having piled on the pressure in the final quarter, the away side struck the decisive blow at the death courtesy of top scorer Lukaku.
Next up for Martinez's side is a home clash with Tottenham, while West Ham will complete its campaign by making the long trip to relegation-threatened Newcastle United.