They have already complicated England's route by finishing top of Group C, making Fabio Capello's runners-up travel to Bloemfontein tomorrow for a tricky last-16 encounter against Germany.

The USA's prize is a clash tonight against Ghana, the sole surviving African team, at the Royal Bafokeng stadium, just minutes away from England's training headquarters.

Yet Bradley is confident Landon Donovan and co can go one better than the 1930 USA side who came third at the inaugural World Cup.

Bradley said: "If we continue to build on the successes so far we can go to the end. That's what it is all about, but that has to be balanced with a concentration on each game.

"We try hard not to get ahead of ourselves but at the same time everybody has this idea that if everybody gives their best effort, if everybody puts everything they have into it and if things go our way then we can travel far."

The team were in buoyant mood after receiving a call from President Barack Obama while at dinner on Thursday night.

He demonstrated how he had been following their progress by inquiring about the injury news on goalkeeper Tim Howard's bruised ribs and Clint Dempsey's facial cut.

Both are fit and Bradley has few worries ahead of a match they clinched with a stoppage-time winner against Algeria from Donovan.

The manager also rejects any notion they do not play thrilling football.

He added: "We have shown an ability to move the ball quickly and intelligently. We have some individuals who have made the special plays you need to win championships. We are a team that works hard, is disciplined and is creative at the right moments."

Meanwhile, Ghana, who knocked the USA out with a 2-1 win in the final match of the group phase four years ago, were boosted by the news defenders John Mensah and Jonathan Mensah have recovered from injuries but Isaac Vorsah is ruled out.

Ghana'sSamuel Inkoom also revealed Fulham's John Pantsil had been supplying information about his clubmate, one of America's key men, Dempsey.

He also insisted they were playing for the entire continent.

"All of the African countries will be supporting us and we are not going to disgrace them," said Inkoom. "We are going to make them happy.

"We are the African hope now and we are not going to disappoint them. We are going to win."