Liverpool and Arsenal are two of the Premier League’s biggest clubs and over the years they have produced a number of entertaining matches when they have faced each other. Wednesday night’s encounter at Anfield was no different as the sides shared the points in a thrilling 3-3 draw which turned out to be an instant classic.

Coming into the fixture much had been made about the Reds mounting injuries but they relentlessly attacked Arsenal with vigour throughout as the table toppers struggled to cope with their intensity.

The game was packed with action from start to finish and there is much to reflect on, but what are the main lessons to be learned from the encounter?

1.  Arsenal’s inconsistency could prove costly

Arsenal fans might have been left seething after Joe Allen’s dramatic late winner but in reality they were lucky to see their team escape Merseyside with a point. From the beginning of the match Jurgen Klopp had his men press the Gunners high up the pitch and the North London club were being hammered under the cosh for much of the first half.

Arsenal’s defence has undoubtedly improved and matured over the past few seasons but against Liverpool they played with a recklessness that bordered on the insane. Wenger’s hap-hazardous backline looked porous and weak as it was continually pierced by penetrating runs from the likes of Roberto Firmino and Adam Lallana.

Just like in their loss to Southampton, Wenger’s side were lacking an effective protective shield for their back four as the presence of their combative midfield anchor Francis Coquelin was sorely missed but whether the French boss addresses this problem in the transfer window is a different prospect entirely.

Whilst the Gunners showed grit and determination to come back from behind twice, before taking the lead, if they are serious about winning the title then they need to grind out results and conceding a late equaliser was cheap play on their behalf.

Arsenal have the quality amongst their ranks to see out tight matches but, despite throwing on Mikel Arteta and Kieran Gibbs, they displayed their trademark fragility and naivety by allowing their opponents back in the game and they need to sort this problem out soon to keep their hopes of glory alive.

2.  Samba superstars shine

When it comes to silky South American superstars Arsenal and Liverpool are blessed with two of the Premier League’s best in Alexis Sanchez and Phillippe Coutinho respectively. However, both were missing through injury and in their absence Joel Campbell and Roberto Firmino stepped up to the plate to show they have the qualities to succeed for their clubs.

Firmino arrived to Anfield with a hefty price-tag and, after a slow-start, he has finally begun to show glimpses of his potential. The Brazilian opened the scoring for his side with a well-taken effort before he grabbed a second moments later with a delightful curling finish that had Petr Cech firmly beaten. Firmino was a menace throughout as his assortment of skills bamboozled his opponents and if he continues to improve then he will become a key player for the Reds under Klopp’s regime.

Campbell on the other hand has been flirting on the fringes of the Arsenal first-team for several years now and thanks to injuries has finally been given his chance. Previously, he has struggled in the big games but on Wednesday he was a revelation as his pace allowed his side to look threatening on the counter. The Costa Rican winger is not afraid to unleash efforts on goal and he has an eye for a killer pass, as proven by his mesmerising assist for Aaron Ramsey’s strike, and performances like this suggest he has a bright future at the Emirates Stadium.

3.  Klopp desperately needs to invest

From one calamity keeper to another, Jurgen Klopp hasn’t exactly had the rub of the green in the past week has he? After Adam Bogdan’s shaky display against Exeter on Friday, Simon Mignolet did his best impression as he was beaten far too easily for Arsenal’s first two goals.

In defence, injuries meant that Kolo Toure was handed a rare start and the Ivorian endured a difficult evening against his former club. Olivier Giroud’s terrific turn in the box sent the centre-back sprawling on his knees and allowed the Frenchman to fire a sumptuous strike into the net.

Klopp took over the reins at Anfield tasked with making sure that Liverpool climbed up the table but performances suggest some serious investment on players of star quality is needed before that happens.