Brighton boss Roberto de Zerbi has said they could not compete with Arsenal due to injuries, as they lost 3-0 on Saturday.
Bukayo Saka opened the scoring for the Gunners from the penalty spot in the first half.
Goals from Kai Havertz and Leandro Trossard in the second half ensured Arsenal took all three points at the Amex.
De Zerbi, speaking to BBC MOTD, said: “We played a good first half and played well in the second half until the second goal. After that, we played not so good and deserved to lose against one of the best Premier League sides. With our injured players, we can’t compete against Arsenal.
“We are sorry and disappointed for our fans. We wanted to get points, to win the game and compete in better ways. We are having a tough moment because we are playing without a lot of injured players. It is tough.”