The decisive moment arrived early, as Eberechi Eze struck in the ninth minute. The goal stemmed from an inventive sequence of three short corners, culminating in Eze collecting the ball on the edge of the area and unleashing a first-time, curling effort into the top corner beyond Nick Pope.
Despite the bright start, Mikel Arteta's side struggled to assert control thereafter. Newcastle grew into the contest, enjoying the greater share of possession during the first half.
Their pressure nearly paid off when Sandro Tonali tested David Raya with a powerful long-range strike, forcing the Arsenal goalkeeper into a sharp diving save.
The second half offered few clear-cut opportunities, with both teams lacking precision in the final third.
Newcastle introduced Yoane Wissa from the bench in search of an equaliser, but he squandered a gilt-edged chance late on, missing a close-range volley.
Arsenal, meanwhile, threatened sporadically on the break. Gabriel Martinelli and Martin Odegaard both forced saves from Pope as the visitors sought to put the game beyond doubt.
Ultimately, Eze's early strike proved sufficient, as Arsenal held firm to secure a crucial victory in their pursuit of a first league title in 22 years.
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