Glenn Murray's double helped Brighton and Hove Albion clinch their first away victory in the Premier League with a 3-0 win over West Ham that piled the pressure back on Slaven Bilic.
Murray struck either side of an effort from club-record signing Jose Izquierdo as Brighton damaged the feeling of resurgence that one defeat in five top-flight matches had given West Ham.
Bilic's side produced an insipid display and could be in the relegation zone by the time they face fellow strugglers Crystal Palace next week, while Brighton moved into the top half courtesy of the three points.
Murray got the Seagulls off to a great start by heading home his first Premier League goal since earning Bournemouth a shock victory at Chelsea in December 2015.
He exploited some shoddy defending from Pedro Obiang and the midfielder, as well as goalkeeper Joe Hart, should have done more to stop Izquierdo opening his Brighton account in first-half stoppage time.
West Ham have never overturned a two-goal half-time deficit in the Premier League and - after being booed off by unsatisfied supporters - they did not look like ending that record at the 76th attempt, with Murray wrapping up the win from the penalty spot after Pablo Zabaleta's clumsy challenge in the box.
2 - Both of Glenn Murray's braces in the Premier League have been against West Ham (also February 2015 for Crystal Palace). Thorn. pic.twitter.com/50Ng2uC3TF— OptaJoe (@OptaJoe) October 20, 2017
Obiang started in place of the suspended Andy Carroll and his loose marking enabled Murray to connect with Pascal Gross' brilliant dead-ball delivery and head beyond Hart in the 10th minute.
West Ham gradually became more adventurous but Lewis Dunk flung his body in the way of a shot from Winston Reid to deflect it out for a corner before a strike from Manuel Lanzini suffered the same fate before the half-hour mark.
Javier Hernandez had a shot blocked by Shane Duffy before dragging an ambitious cross-goal effort wide as half-time approached and it proved costly as Brighton doubled their lead in the second minute of stoppage time.
Hart did well to deny Murray a second but when Izquierdo cut inside Obiang and curled a shot to the top-right corner, the goalkeeper's touch was not enough to keep it out of the net.
Bilic sent Andre Ayew on for Cheikhou Kouyate for the second half but West Ham struggled to break down a Brighton side intent to hold onto their advantage.
The hosts did not give Mat Ryan cause for concern until midway through the second half when Lanzini's 25-yard free-kick bent just outside the post after a touch off the wall.
Murray failed to beat Hart at his near-post after Anthony Knockaert's dazzling run down the right, but he had his second in the 75th minute.
Zabaleta's lazy tackle on Murray led to a penalty which the striker slid straight down the middle to clinch an impressive victory for Brighton that will result in questions about Bilic's future resurfacing.
Key Opta Stats:
- Brighton won their first away match in the top flight of English football since March 1983, ending a winless run of 11 games.
- They also recorded their joint-biggest away top-flight win, equalling their 3-0 victory at Crystal Palace in April 1981.
- This was West Ham's heaviest home league defeat against a newly promoted side since losing 5-1 to West Brom in November 1931.
- The Seagulls end the day in the top half of the top-flight outside the month of August for the first time since October 1982.
- Pascal Gross has assisted four goals in his first nine Premier League matches; of players to have played their first nine games for a promoted side, no player has more.
- Since Slaven Bilic took charge of West Ham, the Hammers have conceded 18 penalties in the Premier League – four more than any other side.
|Jorginho has ´five-year Man City deal waiting´|
|BREAKING NEWS: Wolves sign Portugal goalkeeper Patricio|
|Pekerman criticises Barcelona´s treatment of Yerry Mina|
|Neymar misses Brazil World Cup training|
|FIFA opens disciplinary proceedings over alleged Mexico homophobic chants|
|Cisse hoping to be a pioneer for black and African coaches|
|World Cup over for Croatia´s Kalinic|
|Defiant Jones confident of upturn in England fortunes|
|Pogba a natural leader for France - Matuidi|
|Frampton to face Jackson as Fury continues comeback in Belfast|
|Team effort needed for Japan to stop James, says Nishino|
|Di Francesco extends Roma contract|
|It was a normal challenge - Switzerland equaliser fine by Shaqiri|
|Hamilton hopes to avoid ´boring´ French Grand Prix|
|Coutinho expects more Neymar punishment at World Cup|
|Cisse hails Mane as ´one of the best players in the world´|
|Forsberg falls flat as Granqvist proves Sweden´s hero|
|Sweden 1 South Korea 0: Granqvist´s VAR-assisted penalty settles tight game|
|Nishino concerned Japan players affected by Osaka earthquake|
|Isco pleased with Lopetegui´s Real Madrid appointment|
|Hazard hints at Real Madrid interest|
|Wasps disappointed as Wilson joins Scotland backroom staff|
|Hierro has full confidence in De Gea|
|Russia will stop Salah - Cherchesov|
|Allen signs new four-year Stoke contract|
|England issue update over injured duo Stokes and Woakes|
|Mancini leaves door open for Buffon´s Italy return|
|Alli calls for England to be ruthless in World Cup opener|
|Tahir rested as Proteas call up uncapped duo|
|Uruguay v Saudi Arabia: Centurion Suarez seeks World Cup redemption|
|Portugal v Morocco: Hat-trick hero Ronaldo hunts stricken Atlas Lions|
|Argentina didn´t draw because of Messi´s missed penalty - Maradona|
|Wenger heaps praise on France star Kante|
|If VAR helps referees, I´m not against that – Australia´s Sainsbury|
|Kimmich questions Germany mentality after shock defeat|
|Roberts to leave Warrington Wolves|
|Australia talent Arzani ready to make the jump from A-League|
|Lewandowski: I can be at the top until I´m 35|
|All Blacks winger Savea confirms Toulon switch|
|Free Fall available for France after red card rescinded|
|South Korea can progress from wide-open group, says Park Ji-sung|
|Gordon called up by Wallabies to replace injured Genia|
|Germany can still win World Cup, insists Werner|
|Man United & Real Madrid talk not affecting Milinkovic-Savic|
|Out-of-contract Ruiz focused on Costa Rica|
|Southgate will not bombard England with last-minute instructions|
|Muller: Germany under extreme pressure|
|Rangers score four runs in ninth to pick up walk-off win over Rockies|
|U.S. Open champion Koepka happy to continue being ´overlooked´|
|Pogba: I´m the most criticised player in the world|
|Maradona: Sampaoli´s game plan against Iceland was a disgrace|
|De Gea will bounce back from error – Marchena|
|Slater named for Maroons return|
|Woods, Faldo, Harrington and Koepka – U.S. Open champion joins fine club after successful defence|
|Fleetwood positive despite falling short at U.S. Open|
|Jesus: I had no reason to play for a penalty|
|Hernandez admits to exaggerating fouls against Australia|
|Koepka says winning two U.S. Opens not even in his ´wildest dreams´|
|Hernandez: Griezmann an idol at Atletico|
|Sri Lanka take charge despite Gabriel exploits|
|U.S. Open final-round timeline: How clinical Koepka kept his crown|
|Koepka fights off challengers to successfully defend U.S. Open title|
|´Aching´ Neymar urges referees to intervene|
|BREAKING NEWS: Koepka holds on to defend U.S. Open title|
|Lozano goal causes artificial earthquake in Mexico|
|Djokovic: Mental battle will be Murray´s biggest|
|Hummels criticises Germany tactics in Mexico loss|
|Brazil the latest favourites to stumble, but Tite and Neymar won´t panic|
|Magnificent Fleetwood matches U.S. Open record with closing 63|
|Brazil 1 Switzerland 1: Zuber pegs back below-par Selecao|