Peter Crouch is desperate to avoid becoming known as England's super-sub.
The Liverpool striker again impressed as a second-half replacement during Tuesday's friendly against Hungary, scoring the final goal in a 3-1 victory.
However, the 25-year-old is determined to prove to Sven-Goran Eriksson that he does not need to tinker with his preferred 4-4-2 formation to deal with Wayne Rooney's absence and that he should start alongside Michael Owen at the World Cup.
"I want to do as much as I can to get into the starting XI and hopefully on Tuesday I pushed my claim a little bit more," said Crouch.
"That's definitely my aim. I wanted to make an impression and hopefully I've done that - and done enough to get a run in the team. Everyone wants to play in a World Cup.
"This is the most confident I have been in my career.
"I felt great against Hungary. I wanted as much of the ball as I could get and I loved every minute of it and to score as well capped it off.
"I'm realistic. If Wayne and Michael are fit, they are going to start ahead of me and that's the way it is at the moment.
"If Wayne is not fit for the early games, all I can do is push my claim and hopefully I did enough on Tuesday and can do a bit more if I get a chance on Saturday against Jamaica."