Bournemouth boss Andonl Iraola admits they failed to meet standards for defeat at home to Arsenal.
The Gunners cruised to a 4-0 win at Dean Court.
Iraola told the Daily Echo: I think more than the result, you can lose against these kind of teams because they were very good, but it was the first game this season I felt we were not at the level.
We need to give our best, be at our best level to compete against these kind of teams and we were not, especially after 1-0."
He added: We cannot concede two penalties, because at the end it is almost conceding two goals against this kind of opposition.
Also the first goal is a little bit strange, because I don't think he tries to finish, Gabriel Jesus, it is a rebound but we should be there.
At the end we lose the position against Bukayo Saka, who scores and they are mistakes that take you out.
Because we started the game really well, we were doing well. But after the 1-0, I think they were better than us.
I think to concede two goals in the first half is too much, because they didn't have a lot more chances.
We touched a lot of balls in their box, one from Dom (Solanke), from Phil (Billing), from Ryan (Christie) and then they defended really well.
I think they blocked almost everything. We were close, but we didn't have the final product."