Fabio Capello insists England's FIFA World Cup™ campaign is on track despite Saturday's disappointing draw against the United States.

Preparations are under way for Friday's encounter with Algeria, with the backdrop of Robert Green's howler and a groin injury for Ledley King that could effectively rule him out of the competition.

Yet rather than look on the dark side, Capello can see the positives from a performance that has done little to shake his belief a place in the final on 11 July can be achieved.

"I didn't make mistakes and I'm not worried for the future. We played a good game and, for me, the most important thing is to see the spirit of the team and also the physical condition of the players.

"I was worried about the result because it is possible to lose a game like this. We had seven or eight chances. That is good football. But it is not enough just to create the chances. To win we have to score. Twice we were in front of the goal, once with Shaun Wright-Phillips, once with Emile (Heskey). Alone, Absolutely alone," he insisted.

That Heskey should miss in such a situation is perhaps hardly a surprise and the Aston Villa man did set up skipper Steven Gerrard for England's fourth-minute opener with a deft touch. Had Green not suffered the inexplicable aberration that places a huge question mark over his chances of featuring on Friday, England would be looking back on a result and a performance that provides plenty to build on.

As it is, news that King - a man Capello was prepared to take a chance on despite suffering so many recent injury problems - could be out of action for at least a fortnight with the injury that forced him off at half-time merely compounds Green's performance.

Should King's absence be confirmed, he would be out at least until after a last-16 knockout game and, with his general fitness suffering as a result, is hardly likely to be plunged into a potential quarter-final.

The good thing about us is that we've shown in the past when bad things happen to us, we don't really put our heads down and bow.

England manager Fabio Capello defends goalkeeper Robert Green after his costly mistake against the USA on Saturday.

For Green, the damage is completely self-inflicted and Capello now needs to assess the West Ham keeper's mental state before deciding whether to risk him against Algeria.

"We must think about this problem psychologically. Goalkeepers make mistakes. This is part of football. You have to accept that. I decided on Green because he played very well in the last game against Platinum Stars and also against Mexico at Wembley, and in the second-half last night he played very well and made a really important save. But a mistake remains a mistake. Now I have to speak with him, then I will decide what to do," the England manager said.