Pierre-Emerick Aubameyang and Alexandre Lacazette celebrate celebrated the Gunners' second goal against West Ham United.

Arsenal recorded their first Premier League win of the season when they defeated West Ham United by three-goals-to-one in a weekend match played  inside the Emirate Stadium.

This victory , without a doubt , has removed a huge burden from the shoulders of the new Gunners’ coach , Emery Unai  , who had taken some flak in the wake of his side’s losses to Manchester City and Chelsea in their first two league games. On the other hand West Ham’s loss – their third consecutive one , may incite the fans and pundits to start criticizing the methods of Pellegrini who has spent a huge amount of money in players’ recruitment this season.

Arsenal had the first goal-scoring chance in the match of the early exchanges when Henrikh Mkhitaryan’s long-range strike was saved by  Arsenal former goalkeeper ,  Lukasz Fabianski.

Marko Arnautovic scored for the Hammers in the twenty third minute of the game , beating Peter Cech with a low curling shot from outside the eighteen yard box.

The match became a balanced contest as the game approached the half-hour mark ; and both teams where able to attack each other’s half of the pitch with relative ease.

After West Ham opened scoring the trio of Arnautovic , Mikhail Antonio and Felipe Anderson created all sorts of problems for the Gunners , as constantly attacked them with lungs-bursting runs and good link-up play.

Nacho Monreal equalized for the Gunners few minutes after his side went down by a goal . A Hector Bellerini’s low cross from the right flank was punched out by Fabianski right to the front of an unmarked Monreal inside the Hammers’ eighteen yard box , the left full-back steadied himself with two deft touches before firing the ball into the roof of the net.

Robert Snoodgrass wasted a chance to double his side’s lead in the last minute of the first half when his shot from inside Arsenal’s eighteen yard box was deflected out of danger by the opponent’s defender.

Shkodran Mustafi’s powerful header was saved by Fabianski in the early minutes of the second stanza of the match.

West Ham threatened occasionally from the mid-field where Anderson operated, the Brazilian dribbling runs were difficult for the Gunners to curtail.

The substitution of Arnautovic due to injury blunted the Hammers attack for the remaining part of the game.

Coach Unai introduction of Alexandre Lacazette added more fire-power to his side’s attack , which had failed to sparkle because of the underwhelming performance of Pierre-Emerick Aubameyang who operated as central forward.

Arsenal shot into the lead in the seventieth minute when Issa Diop deflected the shot from Lacazette into his own net.

Former Gunners’ striker , Lucas Perez , wasted the chance to equalize for West Ham when he shot wide from the goal-post the pass from Anderson that located him inside the Gunners’ eighteen yard box .Anderson , who sprung the counter-attack ,raced with the ball from his half of the pitch to the front of the opponent’s eighteen yard box before laying the pass to an unmarked Perez only to have the chance squandered by Perez’s poor marksmanship .

One of the Gunners’ second half substitutes , Danny Welbeck , sealed his side’s victory with a third goal in the last minute of the game . He received a pass from Bellerin in an unmarked position inside West Ham’s eighteen yard box , and swiveled round with the ball in a one hundred and eighty degree turn before smashing the ball into the net.

Today’s loss made it the third consecutive loss for Manuel Pellegrini’s side , but there are positive signs indicating that West Ham will soon start picking up points as soon as the new players master the tactics of their equally new manager.