Jofra Archer says he is determined to impress in England's one-day series against Pakistan and be ready to break into the final World Cup squad in case of injury.
The uncapped all-rounder was omitted from the preliminary World Cup squad on Wednesday but got his maiden England call-up for the warm-up games against Pakistan and Ireland next month.
The final squads must be named until May 23.
Barbados-born Archer, who is eligible for national selection under new England and Wales Cricket Board residency rules, said he was surprised by his quick elevation.
"I thought I would have to wait a couple more years before I would be in contention for the full squad, I thought I would have to play for (England) Lions," the all-rounder said.
"I was fully prepared in my mind that it was going to be a seven-year job. When I found out I was qualified more quickly it was obviously a bit of a shock but also exciting."
While the 24-year-old has admirers in England regulars Ben Stokes and Jos Buttler, Chris Woakes said it would be unfair for England selectors to ask any player to make way for the uncapped Archer.
"I understand the situation and I'm very happy with everything. I don't want to step on anyone's toes," said Archer, whose ability to bowl at more than 90 miles per hour and power-hitting make him a limited-overs asset.
"I'm not in the World Cup squad but it's a great chance for me to show what I can do and anything can happen. If someone gets injured, I want to put myself in a position where I'm the first person they turn to."
You can watch every match of the 2019 ICC Cricket World Cup on Sky Sports Cricket, starting with England vs South Africa at The Oval on Thursday, May 30.