Premier League champions Arsenal recovered from an early setback to secure a 2-1 victory over Chelsea in an entertaining London derby at Emirates Stadium.
Chelsea made a dream start, taking the lead after just two minutes through £117m summer signing Morgan Rogers.
Arsenal failed to properly clear Reece James' free-kick, allowing Rogers to fire a volley beyond David Raya and become the first player to score against the Gunners this season.
Despite the early breakthrough, Chelsea were soon forced onto the defensive as Arsenal increased the pressure.
Emiliano Martinez produced a strong save to deny Bukayo Saka, while Jorrel Hato and Wesley Fofana made important blocks to keep the hosts at bay.
Arsenal eventually found their equaliser in the 25th minute.
Former Chelsea forward Kai Havertz found space inside the area and beat Martinez at his near post with a composed finish.
Chelsea responded positively and came close to restoring their advantage.
James tested Raya with an effort from distance before Pedro Neto produced a superb individual run and struck the post.
However, Arsenal completed the turnaround five minutes into the second half.
Havertz cleverly allowed the ball to run through with a dummy, creating the opening for Martin Odegaard to beat Martinez and score his second Premier League goal in three appearances.
Chelsea continued searching for a way back into the contest and almost snatched an equaliser in the closing moments.
Substitute Estevao looked destined to score, but Raya produced an excellent fingertip save to preserve Arsenal's lead.
The victory maintained Arsenal's perfect start to the Premier League season and extended their winning league run to eight matches stretching back to last campaign.
Alongside Manchester City, Arteta's side are one of only two teams to have won each of their opening three matches.
It was also an important early test for the defending champions, particularly after conceding their first goal of the season inside two minutes.
Havertz and Odegaard ultimately provided the response, while £55m summer signing Ezri Konsa produced a solid performance on his first Arsenal start.
The Gunners now turn their attention to the Champions League, where they travel to face Napoli on Wednesday.
Chelsea, meanwhile, showed signs that they could challenge higher up the table after finishing 10th last season, but their defensive problems remain a concern for Xabi Alonso.
The Blues have now gone 19 consecutive Premier League matches without keeping a clean sheet and have suffered five straight league defeats at Emirates Stadium.
Rogers has made an encouraging start following his big-money move, contributing two goals and an assist in his opening three league appearances, but Alonso will need to address Chelsea's defensive weaknesses if they are to close the gap on the champions.
