Brighton moved top of the Premier League after holding 10-man Arsenal to a 1-1 draw at the Emirates Stadium.
Kai Havertz's first-half strike was cancelled out by Joao Pedro, while the hosts played most of the second half with a player less following Declan Rice's red card for two bookable offences.
The Gunners broke the deadlock seven minutes before half-time when Bukayo Saka outmuscled Lewis Dunk before teeing up Havertz, who lifted the ball into the empty net over the outrushing Bart Verbruggen.
However, Mikel Arteta's side were reduced to 10 men within four minutes of the restart, with Rice shown a second yellow card after he was deemed to have prevented the taking of a Brighton free-kick.
The Seagulls were level just nine minutes later when David Raya parried Yankuba Minteh's initial strike straight to Joao Pedro, who made no mistake from close range.
Fabian Hurzeler's side looked more likely to grab the game's decisive third goal as they dominated possession later on but, in the end, were forced to settle for a share of the spoils.
Data Debrief: Saka matches Henry as Gunners' winning streak stalls
Arteta's side will count themselves fortunate to have taken a point from this contest, given they enjoyed just under 25% of the second-half possession at the Emirates - albeit a man light after the first red card of Rice's 245-match Premier League career.
The Gunners started well as they sought a ninth straight league win, and were deserving of their lead through Havertz's fourth goal in as many appearances against Brighton - and his seventh in nine home games.
His effort came after clever play from Saka, whose assist was his third in as many matches this term. The only Arsenal player to previously provide an assist in each of their opening three games of a Premier League season was a certain Thierry Henry in 2004-05.