The Group A tournament began on 5 March 2003 in Mexico City, Mexico. All four teams participating made their debuts at the IIHF World U18 Championships. Australia won the tournament after winning all three of their games and gained promotion to Division II of the 2004 IIHF World U18 Championships. Mexico finished second after losing only to Australia and China finished third after losing to Australia and Mexico. New Zealand who finished last also suffered the largest defeat of the tournament, losing to Australia 1–14. Lliam Webster of Australia finished as the top scorer of the tournament with nine points including five goals and four assists. Australia's Patrick Baxter finished the tournament as the leading goaltender based on save percentage.