Arsenal boss Mikel Arteta offered no excuses after their shock defeat at Brentford for the Premier League opener.
The Gunners, who were missing Pierre-Emerick Aubameyang and Alexandre Lacazette, lost 2-0 on the night.
Arteta said, "I'm disappointed. We started the season against a good opponent. I don't think we deserved anything different. They scored from a long throw-in and we didn't have enough presence in the box."
Should Brentford's second have been disallowed for a foul on Bernd Leno? "It's allowed in the Premier League. He cannot move. I can't change it now.
"The first goal gave them some hope. We wanted to play better in the second half but we need many more shots on target, then we conceded on a set-piece.
"A lot of young boys were doing everything they can. For some of them it was the first experience in the league – that says a lot."
On missing Aubameyang and Lacazette, he added: "I can't change that. We knew that before the game. I don't know [if they'll be available for the next game]."
"What I can control and help, I'll put all my enthusiasm and work into that."