Newcastle's Alexander Isak delivered a powerful header to hand Arsenal a narrow 1-0 defeat, dealing a blow to the Gunners' Premier League title aspirations.
Isak's crucial strike came in the 12th minute, converting an excellent cross from Anthony Gordon. It was Isak's third goal in as many games, with his clinical finish securing all three points for Newcastle in front of a roaring crowd of 52,249 at St James' Park.
The Magpies put on a spirited display, keeping Arsenal at bay despite the visitors dominating possession.
Full-backs Lewis Hall and Tino Livramento were particularly impressive, supporting a defence that proved resilient against Arsenal's attacks.
The victory signalled Newcastle's growing form, a significant improvement from their inconsistent start to the season.
Arsenal, under Mikel Arteta, displayed periods of promising play but ultimately struggled to break through Newcastle's defensive structure.
Leandro Trossard missed an early chance, dragging a shot wide in the second minute. Moments later, Bukayo Saka narrowly missed the target, and the Gunners found themselves outpaced by Newcastle's quick transitions.
Gordon's perfectly timed cross found Isak rising between defenders William Saliba and Gabriel, who couldn't prevent the Swede from heading past David Raya.
Arsenal kept pushing, with Declan Rice testing Newcastle's backline, but Newcastle's defence held firm.
A late header from Rice deep into stoppage time missed the mark, sealing Newcastle's win.
This result left Arsenal facing challenges ahead of their Champions League tie with Inter Milan, as Arteta will look to address his team's lack of cutting edge.
Meanwhile, Eddie Howe's Newcastle demonstrated their rising competitiveness, solidifying their place as a team capable of challenging the Premier League's top contenders.
