Glenn Murray scored a brace as Brighton and HoveAlbion beat West Ham 3-0 on Friday for their first-ever Premier League away win.
Jose Izquierdo added a goal as the promoted Seagulls jumped up to thtop half of the table in 10th.
Brighton, playing in the Premier League for the first time, went in front in the 10th minute when Murray split two defenders to head home Pascal Gross's free-kick.
Murray had a chance to double the lead in stoppage time when he broke through on goal but was denied by goalkeeper Joe Hart.
The visitors got their second less than a minute later when Izquierdocurled a shot from the edge of the area which Hart got a hand to but couldn't keep out.
Murray then wrapped up Brighton's first top-flight win since 1983 from the penalty spot in the 75th minute after after being taken down by Pablo Zabaleta.
The loss drops West Ham down to 17th, two points above the relegation zone.
League leaders Manchester City look to remain unbeaten when they hostBurnley SaturdaywhileManchester United visit Huddersfield and champions Chelsea look to avoid a third straight loss when they take on Watford.
