When things are going bad in football, a win can really do a great to deal to reignite positivity around a club. That positivity is all the more heightened when it comes at your home ground against your superior neighbours.

It’s not a stretch to say that the past few days have been by far the most positive of West Ham United’s season, if not the entirety of 2017. A 1-0 win at the Olympic Stadium against Antonio Conte’s Chelsea came out of practically no-where.

New club manager David Moyes was met with bemusement from the fans upon his appointment following Slaven Bilic’s sacking, which had been on the cards for some time due to his sides poor form. It was thought that Moyes had not shown enough at his past 3 clubs – Manchester United, Real Sociedad and Sunderland – to have warranted the role of Hammer’s boss.

This argument has plenty of just reasoning – but he went some way to silencing his critics with a terrific - and deserved - victory against the current Premier League Champions.

Now, one result doesn’t change everything that’s happening at a club, but West Ham will certainly be looking to maintain their momentum and scalp another club with top 4 ambitions on Wednesday night, making Arsenal’s visit all the trickier.

Two weeks ago, this fixture looked far more enticing with West Ham, but now, especially after Arsenal’s poor away showing against Southampton at St Mary’s on Sunday, it is looking like it will prove to be a difficult test.

Sunday’s game against the Saints finished 1-1 thanks to a late, late Olivier Giroud equalizer, following 86 minutes of trailing the home side. A frustrated Arsene Wenger called for a cut-down on time wasting following the result, and while that may be an issue, a bigger problem appears to be Arsenal’s form away from the Emirates.

While Arsenal were strong in possession, they barely created a clear cut chance of any kind until the goal and the defence was being far too easily exploited, with Southampton looking far more likely to extend their lead than Arsenal did to score.

The midfield has, oddly, considering it is where the club has arguably the most depth, became a problem of late.

Aaron Ramsey picked up a knock on Sunday and is out; Granit Xhaka has not looked particularly good in recent weeks, yet has managed to retain his position in the starting line-up. Wenger will surely opt to bring in Jack Wilshire following impressive league cameo appearances and cup contributions.

Defender Shkrodan Mustafi is also out with a thigh injury, and Santi Cazorla is still a long way off following a set-back in his recovery from an ankle injury.

West Ham will be attempting to register back-to-back league wins for the first time since January where they claimed 3 points from matches against both Crystal Palace and Middlesbrough.

One player wearing Claret and Blue that Arsenal will really have to look out for is Manuel Lanzini – who has an incredible record of scoring in London derbies, having netted nine times against clubs from the capital since he joined the club in 2015.

Another potential threat is that of Serbian Marko Arnautovic, who bagged the winner against Chelsea, finally announcing himself as a West Ham player after a turbulent opening to his time at the Olympic stadium following his £26 Million Summer move.

The forward has a tendency to show up particularly in the bigger games - including last weekend - an opinion that has made him quite irksome for supporters at the club, as well as at Stoke City where he moved from, but Hammers fans will be hoping for another big performance from the talismanic Serb.

In terms of goalkeeper's, it looks like Adrian will retain his place for West Ham after Joe Hart was dropped against Chelsea, and considering how successfully that went, it looks unlikely that he will be removed from between the posts for this match-up. The Chelsea game was West Ham’s first clean sheet since September 30th, so why change a winning formula.

It's highly likely that Adrian will be looking to be tested by the fit trio of Alexis Sanchez, Mesut Ozil and Alexandre Lacazette. Now that supporters have got the chance to see these three playing together on a few occasions, it is clear that there is great potential for them to be a success when linking up together - however, against Southampton, when they were shut-off by a strong defensive performance, they were unable to showcase their abilities.

It was only when Olivier Giroud was introduced late on that the game opened up for Arsenal, and it was him who salvaged a point after connecting with Sanchez’s cross. Talk has increased in recent weeks about Giroud's potential leaving of the club in an attempt to increase his chances of being contained within France's competitive squad for the 2018 World Cup.

Scoring 17 goals off the bench as an Arsenal player is undoubtedly an impressive haul, however it is naturally believed that the player would like to be starting matches, which is understandable. He may have earned a start on Wednesday night, and if that is to be the case, then it is warranted.

Following Liverpool's draw at the weekend, they sit one point ahead of Arsenal in 4th place on 30 points. The reds come up against Alan Pardew's West Bromwich Albion at Anfield and will be anticipating a win, so it is integral that Arsenal match this with a win of their own.

With Liverpool, Chelsea and Manchester United all dropping points at the weekend, it is a shame that Arsenal did not gain all 3 points but it could have been worse. Amends can be made with solid performances across the busy festive period, starting with a positive result at the Olympic Stadium on Wednesday night.

West Ham United vs Arsenal kicks-off at 8PM on Wednesday the 13th of December at the Olympic Stadium.