A superb finish by midfielder Declan Rice – the 19-year-old’s first goal – earned his side a fine win and dented ’s top-four ambitions.

Rice beat Bernd Leno with a first-time shot after a good lay-off by Samir Nasri, who was making his first top-flight appearance in England since August 2016.

In a highly-competitive London derby, Alexandre Lacazette was denied by an excellent save from Lukasz Fabianski as failed to score in the league for the first time since the opening day of the season.

were full value for their win, with Marko Arnautovic, Rice, Nasri and Felipe Anderson all going close when the game was goalless.

While move up to eighth in the table after a sixth win in nine league games, remain fifth.

The Gunners are three points behind fourth-placed , who entertain Newcastle at 17:30 GMT.

Bright future for Rice and

This was a result to remember for Manuel Pellegrini and , with the performance a fitting way to mark 50 games at London Stadium.

Bournemouth, Wolves, Tottenham, and Watford have all won at the venue this season.

Yet the Hammers turned in one of their best performances under Pellegrini to claim a first win over since 2015.

Nasri brought an air of authority and added quality to the midfield while Marko Arnautovic was busy and inventive despite the player’s agent and brother saying the Austrian striker wants to move to a Chinese club during this transfer window.

The 29-year-old did, however, wave to fans when he was replaced with 20 minutes to go.

are not home again until 4 February – after the transfer window closes – and if Arnautovic was saying his goodbyes, at least ’s future is bright in the shape of Rice.

The teenager has been a revelation this season and played with an air of maturity way beyond his years.

After spurning a good chance to open the scoring on the stroke of half-time when he headed wide, Rice punished ’s defence with a superb finish into the roof of the net after a poor headed clearance.

Will finish in the top four?

are now without a win in five league games away from the Emirates Stadium and are playing catch-up in the race for a place.

Only leaders and have found the net more than the Gunners, but against they failed to score in the league for only the second time this season – and have not kept a clean sheet since 8 December.

Perhaps more worryingly for Unai Emery’s side, they rarely looked like getting back on level terms after Rice’s special finish.

Emery even sent on Aaron Ramsey, who will leave Arsenal at the end of the season, to try and rescue his side.

had started well enough with Alexandre Lacazette looking particularly sharp and strong.

Teenager Matteo Guendouzi went close from outside the area when the game was goalless, while Aaron Creswell made a superb challenge to deny a rare chance for Pierre-Emerick Aubameyang.

On a day to forget for , captain Laurent Koscielny did find the net in the third minute of stoppage time but his header was ruled out for offside.

Man of the match – Declan Rice ()

Declan Rice celebrates scoring for West Ham against Arsenal

Teenage kicks – the stats

  • Declan Rice became the 10th teenager to score a goal for , and the first since Junior Stanislas in November 2009.
  • have taken just two points from their past five away games – they won 13 in the five away games prior to this run.
  • registered only their third home win against and their first since November 2006, ending a run of 10 home games without victory against the Gunners.
  • Samir Nasri played his first game for and registered his first assist in the competition since April 2016, when he assisted Sergio Aguero for Man City against .
  • are one of three teams yet to lead at half-time in an away match this season, along with Burnley and Cardiff City.
  • Hammers boss Manuel Pellegrini remains unbeaten in home matches against Unai Emery in all competitions during his managerial career.

What’s next?

Bournemouth are next up for at the Vitality Stadium on Saturday, 19 January (15:00 GMT). On the same day, host (17:30).

Line-ups

  • 1Fabianski
  • 5Zabaleta
  • 23Diop
  • 21Ogbonna
  • 3Cresswell
  • 16Noble
  • 41Rice
  • 30AntonioSubstituted forObiangat 82′minutes
  • 18NasriSubstituted forSnodgrassat 71′minutes
  • 8Felipe Anderson
  • 7ArnautovicSubstituted forCarrollat 71′minutes

Substitutes

  • 9Carroll
  • 11Snodgrass
  • 13Adrián
  • 14Obiang
  • 26Masuaku
  • 27Pérez
  • 45Diangana

  • 19Leno
  • 20MustafiBooked at 46minsSubstituted forRamseyat 59′minutes
  • 5Papastathopoulos
  • 6Koscielny
  • 15Maitland-NilesSubstituted forBellerínat 69′minutes
  • 29Guendouzi
  • 34XhakaSubstituted forTorreiraat 59′minutes
  • 31KolasinacBooked at 60mins
  • 14Aubameyang
  • 17Iwobi
  • 9Lacazette

Substitutes

  • 1Cech
  • 2Bellerín
  • 8Ramsey
  • 11Torreira
  • 12Lichtsteiner
  • 18Monreal
  • 49Nketiah
Referee:
Jonathan Moss
Attendance:
59,946

Match Stats

Home TeamAway Team
Possession
Home41%
Away59%
Shots
Home11
Away11
Shots on Target
Home3
Away2
Corners
Home7
Away3
Fouls
Home7
Away10

Live Text

Full Time

Second Half ends, United 1, 0.

Offside, . Alex Iwobi tries a through ball, but is caught offside.

Corner, . Conceded by Declan Rice.

Foul by Pierre-Emerick Aubameyang ().

Pedro Obiang ( United) wins a free kick on the left wing.

Offside, United. Lukasz Fabianski tries a through ball, but Andy Carroll is caught offside.

Offside, . Aaron Ramsey tries a through ball, but is caught offside.

Héctor Bellerín () wins a free kick on the right wing.

Foul by Felipe Anderson ( United).

Laurent Koscielny () wins a free kick in the defensive half.

Foul by Andy Carroll ( United).

Foul by Sokratis ().

Andy Carroll ( United) wins a free kick in the defensive half.

Substitution

Substitution, United. Andy Carroll replaces Marko Arnautovic.

Substitution

Substitution, United. Robert Snodgrass replaces Samir Nasri.

Corner, . Conceded by Declan Rice.

Substitution

Substitution, . Héctor Bellerín replaces Ainsley Maitland-Niles.

Attempt saved. Matteo Guendouzi () right footed shot from outside the box is saved in the bottom right corner.

Foul by Marko Arnautovic ( United).

Attempt missed. Alex Iwobi () left footed shot from the left side of the box is close, but misses to the right. Assisted by Aaron Ramsey.

Matteo Guendouzi () wins a free kick in the defensive half.

Foul by Mark Noble ( United).

Attempt missed. Pierre-Emerick Aubameyang () left footed shot from the centre of the box is close, but misses the top left corner. Assisted by .

Attempt missed. Pierre-Emerick Aubameyang () header from the centre of the box misses to the right. Assisted by Aaron Ramsey with a cross.

Substitution

Substitution, . Aaron Ramsey replaces Shkodran Mustafi.

Attempt missed. ( United) header from the centre of the box misses to the left. Assisted by Felipe Anderson with a cross following a set piece situation.

Foul by Alexandre Lacazette ().

Mark Noble ( United) wins a free kick on the right wing.

Corner, United. Conceded by Sokratis.

Attempt saved. ( United) right footed shot from a difficult angle on the right is saved in the top centre of the goal. Assisted by Felipe Anderson with a cross.

Corner, United. Conceded by Alex Iwobi.

Attempt missed. Matteo Guendouzi () right footed shot from outside the box misses to the left.