West Ham captain Mark Noble says the players have wrote off their defeat at Liverpool.
He said in his column for the London Evening Standard: "Our season effectively starts at the London Stadium tomorrow against Bournemouth and we're ready for that challenge.
"There will be some who expect us, with all our new additions and a stronger squad, to just turn up and roll them over but that's not going to happen.
"They're a good side, they began their season with a home win over Cardiff last Saturday and I really respect what Eddie Howe has done at that club.
"His philosophy of recruiting players who work hard for each other within a team concept has brought its rewards."