West Ham United surprised Arsenal 1-0 at London Stadium on Saturday and temporarily moved up to eighth in the Premier League. The Gunners have won only one of their last four league games.
Declan Rice was positioned in the right place to push the Hammers into a lead early in the second half, converting into Bernd Leno's top-right corner after Felipe Anderson's creative run down the right flank.
Unai Emery's side struggled to challenge Lukasz Fabianski's goal and succumbed to the sole goal, failing to score in a match for the first time since their defeat to Manchester City on the opening day of the season.