West Ham United goalkeeper Robert Green says he'll bounce back from his World Cup howler.

Green allowed a 25-yard shot from USA midfielder Clint Dempsey to slip from his grasp and over the line for the equaliser in a 1-1 draw.

Green's error cancelled out the opening goal from England skipper Steve Gerrard and leaves the group in the balance for Fabio Capello's side.

Green said: "It was a mistake. The important thing is not to let it affect you for however long is left in the game.

"That is what you prepare for mentally. You don't prepare mentally for making great saves and playing the perfect game. You prepare for trauma.

"It is regrettable and not what you want to happen but that's life and you move on, you hold your head up high and get to work in training."

Green admits that such an error would have affected him more greatly earlier in his career.

He said: "It won't affect me psychologically. I'm 30, I'm a man, and you have hardships in life and prepare for them.

"I'm strong enough to move on. At a younger point in my life it would have affected me more.

"But you hold your hand up and say 'that's gone, move on and don't let it affect you'."