The Dublin-born player has played in the 2006 European Championships having represented Ireland's Under-23 team in the same tournament earlier in the year, winning the award for Player of the Tournament. He also played in the 2006 EurAsia Cricket Series, but Ireland's A team finished bottom of their group in the competition. Carroll made his World Cup debut against Sri Lanka in Ireland's last 'Super 8's match and also opened the batting against India and South Africa in the recent Future Cup in Belfast.
Carroll has since represented Ireland in hockey, winning several caps. He is currently part of the A training squad. Carroll also captained his club side, Railway Union HC, to a Neville Cup in 2011 and a first Irish Hockey League qualification ever for the club.