Career
He has also represented the Philippines at international level Club career
Gunn became the top scorer of Canterbury-Marrickville Olympic during the 2002–2003 season with 12 goals. International career
Gunn was initially called up to the Philippines national U-23 team during the preliminary qualifiers for the 2000 Summer Olympics football tournament from June to July 1999.
During the qualifiers he scored a goal in the 2–2 draw with Nepal.
Shortly after the Olympic qualifiers, Gunn was called up to the full national team for the 1999 Southeast Asian Games. He played in two of the Philippines" three matches during the tournament.
Against Myanmar and Laos. Gunn featured again for the Philippines during the 2000 Tiger Cup.
He played in the first two of the Philippines" three matches but was only used as a substitute.
lieutenant would be his last international appearance until 2006. In 2006, he was called up again by the Philippines for the inaugural AFC Challenge Cup. Again only playing in two of the Philippines" three fixtures.
Against India and Afghanistan.
They failed to advance from the group stage and the two appearances he made would be his last at international level However, later that year, he would be part of the Philippines squad that was to compete in the 2007 Association of Southeast Asian Nations Football Championship qualification tournament but was sacked by then coach Aris Caslib one week before the qualifiers for speaking out on the terrible conditions of the training venue and the coaching methods.
