Unai Emery has lauded West Ham’s defensive work as the Irons beat Arsenal 1-0 on Saturday.
A brilliant goal from Declan Rice gave the Irons all three points at the London Stadium.
But a heroic performance from Manuel Pellegrini’s side was built on some astute defending from the likes of Rice, Angelo Ogbonna and Issa Diop.
Attackers Pierre-Emerick Aubameyang, Alexandre Lacazette and Alex Iwobi were all restricted to half-chances, and pot-shots from range.
Arsenal last won on the road in the Premier League in November, when they beat Bournemouth 2-1.
Since then, the Gunners have drawn 2-2 with Manchester United, and 1-1 with Brighton & Hove Albion, while they have lost 3-2 to Southampton and 5-1 to Liverpool.
Emery is facing a headache as he looks to turn their form around, but he was impressed with the Irons’ diligence.
Speaking to Sky Sports after the game, he said: “It is disappointing. It is a concern. We need to be competitive both home and away. Away we are not taking the results we want. We had to do more today to impose ourselves. If we can be better in the 90 minutes – competitive and quality – we can do it.
“We lost the ball a lot in the middle. We could improve in the second, but their goal changed the game. They did good work in defence.”
Arsenal are currently fifth in the Premier League, while the Irons are eighth.