Arsenal suffered a humbling defeat at Brighton, losing 2-0 at the Amex Stadium in a match that Mikel Arteta described as a crucial learning experience for his side. Arteta expressed extreme disappointment, stating his team were "very far" from executing the basics expected at this level, particularly in duels and defensive organization. He acknowledged Brighton's superiority, noting they were "really good" and had an extra edge, especially in 50-50 situations.

The Gunners struggled with uncertainty in defence, lost midfield control, and lacked attacking creativity. Arteta pointed to the disrupted pre-season due to World Cup commitments, with 15 players returning late, as a contributing factor. Despite the loss, he emphasized the team's strong start to the season and remarkable performances since returning from the tournament.

Former striker Alan Shearer praised Brighton's dominance, suggesting they could have scored six or seven goals. Curtis Davies called it a "blip" and a "really shocking performance," particularly criticizing the defence. Brighton, now the Premier League's top scorers with 16 goals, exposed Arsenal's vulnerabilities despite their £200m summer spending.

Arteta concluded that the defeat serves as a vital reminder of the Premier League's intensity and the importance of winning the opening phases of games.