Harrison placed Leeds ahead on the London Stadium and netted once more after Jarrod Bowen's equaliser. When Pablo Fornals hauled West Ham level inside the 2d half of, Harrison had an instant reaction because the midfielder completed his treble.
Marcelo Bielsa's facet made it two successive league victories to climb 9 factors clear of the relegation sector. It changed into candy revenge for Leeds, who had been knocked out of the FA Cup within the 0.33 spherical at West Ham only a week ago.
West Ham had won 3 consecutive league games and 4 in all competitions, however their bid to complete within the pinnacle four suffered a primary setback way to Harrison. David Moyes' crew remain fourth, but they may be now just factors in advance of Arsenal, who have video games in hand, even as Tottenham are four points again with 4 games more to play.
Leeds had scored just 8 goals in 9 away league fixtures this season, however Bielsa's men made a flying begin and took the lead inside the tenth minute. Adam Forshaw discovered Harrison inside the West Ham area and he drilled a first-rate finish that gave Lukasz Fabianski no danger.
Daniel James fired simply over from 25 yards as Leeds looked to build on Harrison's 2d league aim this term. Leeds' ongoing harm crisis changed into underscored by the presence of 15-yr-vintage Archie Gray at the bench. They suffered yet greater health distress while Forshaw and Junior Firpo have been each compelled off with what seemed like hamstring problems halfway thru the half of.
Craig Dawson need to have taken gain of Leeds' ultra-modern enforced reshuffle, however the West Ham defender squandered a golden opportunity, heading a corner huge from close-range. Leeds' weak spot at set-portions became exposed inside the thirty fourth minute as Bowen headed West Ham's equaliser from another corner. But Harrison had the best response 3 mins later.
Luke Ayling headed the ball into Harrison's path and he bundled home from near-variety. West Ham equalised within the 52nd minute as Michail Antonio discovered Fornals, who got behind Ayling and guided a clinical end past Illan Meslier. But Harrison wasn't completed yet and the midfielder restored Leeds' benefit at the hour.
Raphinha slid a defence-splitting bypass closer to Harrison, who calmly clipped his shot over Fabianski to bag his treble. Mateusz Klich concept he had wrapped up the points in the 73rd minute with a fierce finish from Raphinha's cutback, but VAR disallowed the aim for a controversial offside choice against Rodrigo.
Meslier made a excellent double store to deny Vladimir Coufal and Bowen in a stressful finale. Andriy Yarmolenko had one remaining danger to equalise in stoppage-time but Meslier turned into identical to it as Leeds held on.
