Mystery is a resource, like coal or gold, and its preservation is a fine thing.

Cahill made his debut for the under-20 team at the age of 14. He has made a corner flag goal celebration his "trademark". However Cahill was not eligible as he was cap-tied to Samoa.

In 2007 he also became the first Australian player to score at an Asian Cup. He scored the first goal by an Australian at a World Cup and has also scored the most goals by any Australian in the World Cup. "
Cahill has become one of the highest profile footballers in the Asian Football Confederation earning 61 caps and scoring 27 goals for his country.