Jade Dernbach is confident of being up to the job if England hand him a shock international debut in Saturday's World Cup quarter-final against Sri Lanka in Colombo.
Dernbach, 25, has flown halfway round the world to join up with the squad after being called up from the second-string Lions' tour of West Indies as a replacement for the injured Ajmal Shahzad.
The Surrey seam bowler was preferred to more obvious options, most notably Warwickshire's Chris Woakes, after the selectors received good reports from the Caribbean.
Dernbach is noted for his changes of pace, in particular his slower-ball variations, something the team management feel could be useful in the subcontinent.
"It will be the same as I approach any preparation for a game," he said. "You've got to expect to play at any opportunity.
"I want to make sure all my preparation has been top drawer, and I'm ready to step in and do a great job for my country.
"I've got a lot to offer, a lot of variations, and I've got a bit of pace. I enjoy bowling at the death.
"They are all important areas in one-day cricket. So if I get the opportunity I hope I can bring them to the quarter-final."
On his slower balls, he explained: "You've got to have that sort of variation in general in one-day cricket, no matter what sort of wickets you come across.
"It's an integral part of the game, and something every bowler has to have up his sleeve."
Dernbach's South African roots - he was born in Johannesburg - are shared by a clutch of his new colleagues.
But like captain Andrew Strauss and wicketkeeper Matt Prior, he learned his profession in England.
"I didn't play any cricket at all really in South Africa," he added. "I moved over when I was 14, so all my cricket has been played in England.
"That's where I call home, and the place that has given me the opportunity to come and play here.
"I was more of a rugby player, to be honest. Cricket sort of happened by chance."