Arsenal are without a win in the Premier League this season, but are hoping to bounce back against West Ham.
The Gunners face a Premier League side with just three wins from their last 17 games, while the Hammers are without their leading goalscorer after a goal in the first half from captain Mathieu Debuchy.
Arsenal are in a tight race with Tottenham for fourth place in the table and are in an interesting position against a Hammers side that has just one win in 11 games, including a draw away to Crystal Palace.
What we know so far: Arsenal have lost two in a row away to West Ham and Tottenham