Goals from Chiekou Kouyate in the 44th minute and Mauro Zarate in the second half gave Slaven Bilic a winning start to life in the Premier League with a shock victory over Arsenal at the Emirates.
The Gunners are many pundits' tips for a genuine title tilt this season but they looked laboured and clearly missed Alexis Sanchez as West Ham matched them in the first half and hit them on the counter attack throughout the second.
All the pre-match hype centered around new Gunners goalkeeper Petr Cech who many feel could be the difference for Wenger's side this season.
But he was arguably at fault for both of West Ham's goals and endured a debut to forget while the real stars of the show were Hammers attacker Dimitri Payet and 16-year-old Reece Oxford in the visiting midfield.
Here's how West Ham's players fared at the Emirates.
Adrian – 8
Assured throughout, the Hammers cult hero made a couple of crucial saves at the right times but in truth did not have a great deal to do as the defence in front of him were so good. Kept talking throughout and keeping them on their toes.
Tomkins – 8
The centre back was fantastic defensively playing out of position as a right-back in place of Carl Jenkinson, who could not play against his parent club. Booked very early on, Hammers fans probably feared the worst given that most of Arsenal's attacks were coming down the left hand side. But he stood strong and offered support where he could going forwards without leaving his defensive partners exposed.
Reid – 10 STAR MAN
Absolutely outstanding throughout on his return to the team after injury. Showed just why West Ham rewarded him with a six-year deal and together with Ogbonna set the standard for the rest of the season. Voted man of the match by the TV pundits, he dealt with everything thrown at him with minimum fuss. As perfect a performance as you can get.
Ogbonna – 9
As good as his central defensive partner Reid at the back, the Italian's only blip coming early on when he was second to the ball and found himself in the referee's book just a few minutes in. Recovered brilliantly, though, and showed just why Bilic was so keen to spend big on him from Juventus. West Ham will not concede too many goals this season if they keep those two fit.
Cresswell – 8
Didn't put a foot wrong and showed his supreme fitness levels by constantly motoring up and down, offering Payet the overlap and getting back to keep things tight. Another who has signed a six-year deal and one of the club's key players. Fantastic.
Noble – 7.5
Captain for the day, Noble was probably West Ham's worst player for the first hour. But he grew into the game and really started to take control of the proceedings when it mattered, dictating the last half an hour to see out a famous win.
Kouyate – 9
Another star performer, the Senegal midfielder was the engine behind West Ham's victory and got up and down all game long. His passing was superb and he was always looking forwards for international teammate Sakho to get in on goal. Crowned a brilliant display with a brave header to put the Hammers 1-0 up before half-time. Not afraid to do the dirty side of the game either and another who has set the standard high for the rest of the season.
Oxford – 9
A stunning debut from the second youngest player in Premier League history and youngest in West Ham's entire history. Many may have questioned the wisdom of throwing the 6ft 5in 16-year-old central defender in at the deep end, particularly in a central midfield role. But he looked like he had been playing there for 20 years and kept a world class player in Mesut Ozil quiet throughout.
Payet – 9
Everyone knew Payet had quality given his outstanding stats for Marseille over the last two or three seasons.
He was even highlighted by Arsene Wenger as the player who could hurt Arsenal most in West Ham's side.
And he was proved right as Payet showed pace, bags of skill, exquisite touch and admirable strength on the ball and willingness to defend which had the TV pundits singing his praises after the game.
He will be West Ham's key man this season going forwards. Created the first goal and was a danger all game long.
Zarate – 7.5
Zarate has been working hard to resurrect his West Ham career after being frozen out by Sam Allardyce last season. Bilic has him working hard for his teammates and he scored from distance to make it 2-0. He did give the ball away quite a lot but is a player who tries to take people on and make things happen so is bound to do that at times. Was subbed late on for Matt Jarvis as he tired.
Sakho – 8
Did not stop running, a constant menace for the Arsenal back four who will know they have been in a game tonight. Power, pace and brave as a lion Sakho has it all, the only thing that was missing was a goal but on this form he will get close to his personal target of 20 this season. Vital the Hammers keep him fit for as much of the season as possible.
Jarvis – 7
Came on for the tiring Zarate in the second half and while he didn't get on the ball as much as West Ham would have liked to make use of his fresh legs, he put a real shift in for the team and busted a gut to get up and down and make a pest of himself.
Nolan – 7
Nolan has his detractors but one thing people cannot criticise about him is his attitude and professionalism. He is the club captain but has been demoted to the bench however he took it like a pro and when he was introduced late on for Reece Oxford he made some vital interceptions and telling passes to break up play and set his team off on the counter attack. Has he found his new role at the club?
Maiga – 7
Was only on for Sakho for a short while and another player who has his knockers. But Maiga put himself about and actually had the Arsenal defence on the backfoot a couple of times which broke up their lat dominance of the ball. His short cameo was the best he's played in a West Ham shirt for a while.