The defender first played for American Samoa in 2002, at the 2002 OFC Nations Cup, held in New Zealand. He scored his only international goal in the 7-2 loss to Tonga on 12 March, netting his country's second goal in the 70th minute. After the Nations Cup, Afu proceeded to play in four 2006 FIFA World Cup qualifiers which were played in Apia, Samoa in 2004. American Samoa lost all four matches, which were against Papua New Guinea, Samoa, Vanuatu and Fiji.