Debutant James Ward-Prowse assisted Nayef Aguerd's opener in the 7th minute with a corner delivered into the box to put the Hammers ahead.

Despite being down to ten men, West Ham held onto their lead and were awarded a penalty after Moisés Caicedo fouled Emerson in the box in added time.

[10] On 1 September, West Ham played newly promoted Luton Town at Kenilworth Road in the first ever Premier League match to be held at the stadium.

The Hammers opened the scoring through Jarrod Bowen, whose header off a Lucas Paquetá delivery deflected into the net off of goalkeeper Thomas Kaminski in the 37th minute.

Mads Juel Andersen scored Luton's first ever Premier League home goal in added time but the match finished 2–1 to West Ham.

Four players were called up for UEFA Euro 2024 qualifying: Vladimír Coufal and Tomáš Souček for the Czech Republic, Alphonse Areola for France and Konstantinos Mavropanos for Greece, another four players were called up for 2023 AFCON qualifiers: Saïd Benrahma for Algeria, Mohammed Kudus for Ghana, Nayef Aguerd for Morocco and Maxwel Cornet for Ivory Coast.

City struck back almost immediately after half time through Jérémy Doku before Bernardo Silva and Erling Haaland added to the scoreline in the 76th and 86th minutes respectively.

[17] West Ham played their first group stage game of the 2023–24 Europa League on 21 September at home to Serbian team TSC Bačka Topola.

A defensive error by Angelo Ogbonna in the 47th minute allowed Petar Stanić to rob him of possession before running on to score past Łukasz Fabiański.

Nayef Aguerd headed in a James Ward-Prowse corner past goalkeeper Noah Atubolu to make it 2–1 to West Ham, the final score.

[30][31] During the October international break, four West Ham players were called up to feature in UEFA Euro 2024 qualifying matches: Jarrod Bowen for England, Konstantinos Mavropanos for Greece and Vladimír Coufal and Tomáš Souček, both for the Czech Republic.

Jarrod Bowen pulled one back for West Ham in the 56th minute but Ollie Watkins and Leon Bailey made it 4–1, the final score.

[34][35] Bowen's goal was the fifth successive away game in which he had scored, a feat only previously achieved in the Premier League by Thierry Henry and Mohamed Salah.

Respects were paid before the game to Everton chairman Bill Kenwright and Manchester United and England legend Sir Bobby Charlton, who had both recently died.

[41][42] The fixture also featured the first game at the London Stadium for Arsenal for former West Ham captain, Declan Rice who received a mixed reception from home supporters.

In a game described by the BBC as "drab" it was not until the 72nd minute that Jarrod Bowen bundled the ball past André Onana from a Lucas Paquetá pass to make it 1–0.

Former West Ham player, Declan Rice gave away a penalty towards the end of the game but Arsenal goalkeeper David Raya saved the Saïd Benrahma spot-kick.

[60] In a game affected by Storm Henk, West Ham played Brighton at the London Stadium in the Premier League on 2 January.

Following a foul in the box on Danny Ings by Gustavo Hamer, James Ward-Prowse scored the resulting penalty to put West Ham 2–1 up in the 79th minute.

After an error in the 3rd minute with new loan signing, Kalvin Phillips passing the ball to Dominic Solanke to shoot past Alphonse Areola, the score was 0–1 at half time.

With the team 4–0 down at half time, thousands of supporters left early in a game described by manager Moyes as "one of the most disappointing days in charge of West Ham."

[74] In the 95th minute, West Ham broke from the halfway line and Edson Álvarez with his first Premier League goal, finished Jarrod Bowen’s pass to make it 3–1, and the final score.

[82][Note 1][83] The latter VAR review, for a possible handball by Tomáš Souček, broke the Premier League record for the longest time taken to complete at five minutes and 37 seconds.

Kalvin Phillips was also involved in controversy when, after the game he was verbally abused and called "useless" by a group of West Ham supporters outside the ground.

[89][90] In 11 April, Wolves manager Gary O'Neil was charged by the Football Association with "improper and/or threatening" behaviour relating to language used to match officials after the game.

He lost consciousness after his head hit the ground resulting in lengthy medical assistance including receiving oxygen, before being stretchered off to be substituted by Maxwel Cornet.

They went ahead in the 65th minute when Cody Gakpo’s cross ricocheted into the net via Tomáš Souček, Angelo Ogbonna and finally, goalkeeper Alphonse Areola.

Having won once in the previous 10 games their defensive record, having conceded 70 goals was the fourth worst in the league only beaten by the three teams in the relegation positions, Sheffield United, Burnley and Luton Town.

[152][153] Win Draw Loss Fixtures As a Premier League side, West Ham joined in the third round, and were drawn at home against EFL Championship club Bristol City.

[164] Win Draw Loss Fixtures On 1 September, West Ham United were drawn into Group A of the Europa League, alongside Olympiacos, SC Freiburg and TSC.