The Hammers are bottom of the league after losing all four of their matches. But the fullback says there's no excuse despite nine players being added to the side this summer.
"We've had a lot of time together, more than two months if you include pre-season," said Cresswell.
"There's no hiding. Four defeats, 10 goals conceded — it's just not good enough, simple as that. We have to get back now and stick together."