Arsenal moved seven points clear at the top of the table following a hard-fought 1-0 win over Brighton and Hove Albion.
Bukayo Saka scored the only goal of the game in the eighth minute, marking his landmark appearance with a deflected strike.
Although Brighton applied significant pressure in the second half, the Gunners held firm to record their fourteenth clean sheet of the season.
Mikel Arteta praised the determination of his players as they navigate a crucial stretch of the campaign.