Emile Smith Rowe scored for a third Premier League game running to extend Arsenal's unbeaten run as they beat Watford 1-0 in Mikel Arteta's 100th game in charge.
Arsenal's breakthrough came after a frustrating first half that saw a Bukayo Saka goal ruled out for offside before Ben Foster saved Pierre-Emerick Aubameyang's penalty.
Foster was in inspired form but could not keep out Smith Rowe's drilled shot with 56 minutes on the clock, with that proving to be the only goal of Sunday's clash at Emirates Stadium, where Juraj Kucka was sent off late on for Watford.
Arsenal are now eight league matches without defeat – winning six of those – making this their best such run in the competition since another eight-game spell ended in March 2020.
Saka thought he had opened the scoring early on when Aubameyang's heavy touch ran to the winger in front of goal, but he was stood beyond Foster and identified as offside by a VAR review.
Arsenal continued to dominate and were awarded a penalty when Danny Rose clattered into Alexandre Lacazette. However, Aubameyang's attempt from the spot lacked precision and Foster saved with a combination of his arm and leg down to his right.
Although Foster was then equal to Gabriel's header, the Gunners had scored at least once in all 14 previous Premier League meetings with Watford and keep that run going here.
Smith Rowe picked up the ball following a positive run from Ben White and swept a first-time finish away from Foster to make it five goals for the season in all competitions.
Substitute Martin Odegaard was then denied when his goalbound effort was tapped in by an offside Aubameyang at the back post.
That set up a slightly nervy finish as Joshua King fired into the side-netting following a lapse in judgement from Aaron Ramsdale, but Kucka's second yellow card for a wild swipe at Nuno Tavares effectively ended Watford's hopes of snatching a point.