Both sides went into this London derby in dire form but it was the Gunners who addressed that and ultimately ran out comfortable 3-0 victors, marking their first league win since February 11.
After a dull first half, Mesut Ozil marked his 150th Arsenal appearance with a tame opening goal before laying on the second for Theo Walcott. Olivier Giroud came off the bench to score the goal of the night.
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Arsenal XI: Martinez, Bellerin, Mustafi, Gabriel, Monreal, Elneny, Xhaka, Walcott, Ozil, Sanchez, Welbeck
Subs: Macey, Mertesacker, Gibbs, Ramsey, Oxlade-chamberlain, Iwobi, Giroud
West Ham XI: Randolph, Byram, Collins, Fonte, Masuaku, Kouyate, Noble, Antonio, Lanzini, Ayew, Carroll
Subs: Adrian, Nordtveit, Fernandes, Feghouli, Snodgrass, Sakho, Calleri