The win provided a fitting celebration for manager Mikel Arteta in his 300th match in charge of the club, but the afternoon was also marred by concerning injuries to both captain Martin Ødegaard and opening goalscorer Declan Rice.
Rice Haunts Former Club
The breakthrough arrived in the 37th minute and was inevitably delivered by the man who knows the opposition best. After a surging run and shot from Eberechi Eze was parried by West Ham goalkeeper Alphonse Areola, Declan Rice was on hand to calmly slot home the rebound against his former club.
Saka Seals the Points on Milestone Appearance
Arsenal continued to press after the break and were eventually rewarded midway through the second half. In the 66th minute, Jurrien Timber was bundled over in the box by West Ham defender El Hadji Malick Diouf, and the referee immediately pointed to the spot.
Bukayo Saka stepped up and made no mistake, sending Areola the wrong way to double Arsenal's lead.
Injury Concerns Overshadow the Victory
While the result was a huge positive, the home crowd was left with two major worries as two key players were forced off due to injury.
The victory, Arsenal's fourth straight in all competitions, temporarily lifts them to the Premier League's top spot, putting the pressure firmly on Liverpool, who are scheduled to face Chelsea later in the day.

