Another week in the Premier League, another Arsenal drama. Arsene Wenger's side slipped to yet another demoralising defeat on Saturday, this time at the hands of West Bromwich Albion.

That's now four defeats in their last five league matches if you're counting and this one was perhaps the most concerning of the lot for Gunners supporters.

There was a distinct lack of fight and determination amongst the team on Saturday, a performance that looked suspiciously like the players just don't enjoy playing for Wenger anymore.

It's looking ever more unlikely that Arsenal will make the top four this season which would be a pretty massive disaster by their expectations.

For West Brom, the 3-1 win was of course a fantastic result. They looked the more hungry side by far and fully deserved all three points.

These are the FIVE lessons we learned from the encounter...

It's probably time to go

We know the arguments for him staying but surely time is fast running out on Arsene Wenger's reign at Arsenal. Yes he's a club legend, yes he doesn't deserve to be treated poorly but don't forget that if he does go, it'll likely be on his terms when his contract runs out.

It's very unlikely there'll be any unceremonious sackings or acrimony but even the most ardent of Wenger supporters are beginning to soften on their stance about his future.

He's served the club well, incredibly well in fact, and he'll rightly go down as one of the most influential figures in the club's entire history. That's romance though and the reality is that Arsenal are unlikely to improve while he's at the helm.

Is that harsh? Maybe. Is it true? Probably.

It's a tough time for all concerned but this defeat is certainly a massive body blow for both Wenger and the club.

Even Sanchez can't save Arsenal all the time

As much as he tries, Alexis Sanchez can't always bail out Arsenal. When he equalised shortly after Craig Dawson's opener it looked like he'd done it again, saving his side from defeat and inspiring them to another victory.

Sometimes though that defence is just a little bit too leaky and in any case, the Gunners midfield were hardly supplying the Chilean attacker with much at all.

He's not free from blame but he does contribute more than any other player and despite scored 22 goals this season and setting up 12 more, it looks like there'll be little success to celebrate come May.

Walcott still blowing hot and cold

Theo Walcott has had one of his best seasons in an Arsenal shirt but inconsistency is still an issue for the attacker and again today he was lacking, fresh off three goals in three starts.

He was hauled off just after the hour mark on Saturday as Arsene Wenger searched for a goal with Olivier Giroud. It was a justified change with Walcott an ineffectual presence in the final third throughout his time on the pitch.

The longevity of his Arsenal career has been impressive but he's rarely been able to string together the consistency to make it a memorable career. He's just kind of... there.

On his day he is exceptional but it's days like yesterday that leave Gunners supporters scratching their head and wondering why he still plays such a prominent role.

Is it time to drop him again?

Arsenal fans can't decide if it's in or out

For every Wenger Out protest these days there seems to be a countering Wenger In one. That was true again on Saturday with even aeroplanes getting involved on the action above the stadium, one calling for his departure and the other asking to respect his reign.

It's a tricky situation but at least there's passion on show, it would be much worse if there was a general apathy around the club. While results this season suggest it could be time for him to head off into the sunset, it's a dilemma that the supporters can't collectively wrap their heads around.

Whatever happens over the next few months, it's likely there'll continue to be division amongst the Arsenal fanbase and it's up to whoever, whether Wenger or someone else, to be a unifying figure next season.

West Brom are set-piece kings

It was clear on Saturday why West Bromwich Albion score almost half of their Premier League goals from set-pieces. Craig Dawson was their tower of strength against Arsenal, netting twice from set-pieces to pile the misery on the Gunners. They were his second and third goals in four matches, proving that the Baggies have goals across their team, part of the reason why they are currently doing great in 8th position.

Arsenal are weak from free-kicks and corners and their poor defending is again under the spotlight after Tony Pulis' side had their way with them.

It was a case of the unstoppable force meeting the very much movable object.