Despite Manchester City's resounding beating of Crystal Palace earlier in the day, the Gunners travelled south knowing that all three points would have taken them back to the summit over Liverpool for at least one evening.
Mikel Arteta's men had strode to a 2-0 triumph over the Seagulls in their Emirates encounter earlier in the season, but not since the 2020-21 season had they done the double over their South Coast counterparts.
However, the title chasers immediately took control of the contest and were ahead just after the half-hour mark, as Gabriel Jesus was clipped by Tariq Lamptey inside the box, and Bukayo Saka did the rest from 12 yards.
A well-worked routine in the 62nd minute sparked the Gunners' second of the afternoon, as Jorginho cut back to Kai Havertz to tap in his ninth Premier League goal of the campaign, a personal best for the ex-Chelsea man.
Arsenal remain unbreakable on the roadArsenal's return to the gold medal position was put beyond any doubt in the 86th minute thanks to a former Brighton flame, as Leandro Trossard capitalised on a Pascal Gross error and sped away in the Seagulls half before chipping Bart Verbruggen.
Another masterclass defensively saw Arsenal concede just 0.53 Expected Goals to Brighton, who struggled to conjure up many clear-cut chances, only truly testing David Raya through Julio Enciso's first-half curler.
Joao Pedro managed to work an angle for a strike in second-half injury time, but Gabriel Magalhaes stuck out a leg to preserve Arsenal's clean sheet, which he and his teammates celebrated as if they had just put the ball into the
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