TEAM NEWS
Arsenal defender Laurent Koscielny is out because of an Achilles injury, while keeper David Ospina is a doubt.
However, Per Mertesacker is back after injury and Alex Oxlade-Chamberlain and Aaron Ramsey may also be involved.
West Ham striker Diafra Sakho could be named among the substitutes after recovering from a back problem which has kept him out since November.
Winger Michail Antonio returns to the squad after a hamstring injury, but Aaron Cresswell has been ruled out.

WHAT THE MANAGERS SAY
Arsenal manager Arsene Wenger: "I think it's a good opportunity to remind people we are not fighting to not go down - we are fighting to have a positive end to the season.
"That's why you want the fans to stand behind the team and that the debate at the moment is about that.
"Let's finish as strong as we can and show that we have some resilience, some quality and some mental spirit that we have shown against City."
West Ham manager Slaven Bilic: "Arsenal have their problems, but they are still a team with a lot of pace, a team you can't afford to lose the ball against in your own half because the transition and pace they have up front is unbelievable.
"They attack with numbers which makes them more likely to create something, but when they lose the ball they are very vulnerable because they leave a big space behind which you can use."
MATCH FACTS
Head-to-head
Arsenal have lost just one of their last 17 league meetings with West Ham (W13, D3).
However, that defeat was in this fixture last season - the Hammers won 2-0 to secure only their second victory at the Emirates in Slaven Bilic's first match in charge.
Arsenal
Arsenal have the same record after 28 league games as they did last season, with 15 wins, six draws, seven defeats and 51 points.
The Gunners have only taken four points from the last 18 available.
However, they have lost just one of their 15 matches against sides in the bottom half of the table (W11, D3) prior to the latest round of matches.
Arsenal have scored 14 headed goals in this season's Premier League, a figure matched only by West Brom.
Alexis Sanchez has scored four goals and provided one assist in his last two games against West Ham.
West Ham United
West Ham have lost four successive league games and are without a victory since 4 February (D2, L4).
They could lose five consecutive Premier League matches for the first time since they did so under Avram Grant between April and May 2011.
The Hammers currently have 33 points from 30 games, 17 fewer than they did at this stage last season.
Slaven Bilic's side have dropped 20 points from winning positions in the Premier League this season, more than any other side.
Andy Carroll has played the full 90 minutes in four successive league games for the first time since April 2014.

http://m.bbc.co.uk/sport/football/39426761

ok

A win today will push back the perenial sixth position occupier to its place

https://www.youtube.com/watch?v=XcKnDhSB338

West ham 3- Arsenal 1

maybe because they have missed the position that's why there are working hard to remain there

Arsenal gonna win by 3-1

0-0 Full Match Draw

I dislike Arsenal right now. Them no even dey make football hungry me again.

They forced me to Big Brother Naija..

Will rather watch City game tonight.

Wish them luck sha.

Ex Gunner Fan 1996-2017

We Are Winning Tonight But West Ham Go Score,,,,correct Score 3:1

A cup should be dedicated for 4th position so that Arsenal can have something to compete for
.

A cup should be dedicated for 4th position so that Arsenal can have something to compete for
.
.

its a draw game with both teams scoring

Sisqoman:
0-0 Full Match Draw

abeg leave draw soup for united, we re winning this

Arsenal 2 - 5 westham plus injury to sanchez

2kass:
I dislike Arsenal right now. Them no even dey make football hungry me again.

They forced me to Big Brother Naija..

Will rather watch City game tonight.

Wish them luck sha.

Ex Gunner Fan 1996-2017

ex gunner fan? Lol, na so una dey talk, but after two to three victories you'll start blabbing up gunners

I sure say by the time arsenal go win premier league me nigeria go don dey among the developed countries.

WENGER IN!

I sure say by the time arsenal go win premier league nigeria go don dey among the developed countries.
Wenger be making us Man U fans proud

WENGER IN!

Ars 2 - 2 West

Game on

sirvvy:
Ars 2 - 2 West

You must be Sepe lover

Arsene wenger is leaving today..

Any link to watch this game

How is that free-kick

Arsenal 2 - 1 Westham

Thank you Sergio Ramos

Arsenal 3rd keeper doing the job