Ed Joyce, England opening batsman, is keen to do well against Ireland in their Super Eight match in Guyana on Friday, after playing a major role in his motherland's qualification for the World Cup, scoring two hundreds and as many half-centuries in the 2005 ICC Trophy before becoming eligible for England under residential rules.
The Dublin-born Joyce made his one-day debut against his former team-mates at Belfast last year, and finds himself in good form leading into the second round of the tournament after successive half-centuries against Canada and Keyna in his last two matches.
"I'm really happy that Ireland qualified," said Joyce.
"I have got a couple of good knocks in the previous games and I want to maintain my form against them (Ireland) and then against big sides.
"I think runs against Test teams will be great," he added.
"We have done pretty well in the last few games, getting the team off to a decent start.
"We are happy we are doing the job."
Joyce, 28, wished Ireland well, but said he would try his best to maintain his form in the second round.
"We are hoping to build on the momentum," said Joyce, who has scored 460 runs in 15 one-dayers with one hundred and three half-centuries.
England need a solid start against Ireland to boost their chances of qualifying for the semi-finals after coming into the Super Eights with no points, as they lost to New Zealand in their opening group match.
Joyce, who has opened with skipper Michael Vaughan in the first three games, has been able to keep Test opener Andrew Strauss out of the starting line-up, and has become the ideal man to replace the omitted Marcus Trescothick.
The Middlesex left-hander came to the fore with a century against Australia in a one-day match in Sydney early this year, his innings helping England win the match and go on to win the series.