The following year, he played several matches in Ireland's C & G Trophy campaign, and an Intercontinental Cup match against Namibia before making his ODI debut against England in what was Ireland's first ODI. His brother Ed also made his ODI debut in that match, but he was playing for England. It was an unsuccessful ODI debut for Dominick, as he was bowled for a duck by Steve Harmison. He did not represent Ireland again for just under a year, when he was dismissed for 10 in a Friends Provident Trophy fixture against Middlesex at Clontarf, falling to a disputed catch by his brother Ed. He resumed his ODI career with a couple of appearances in Ireland's June internationals against India and South Africa at Stormont, scoring 18 and 11 in the respective fixtures.