Wilson's talent ensured that he became a part of the Australian national team with basis in Italy. He was diagnosed however with Hodgkins disease in 1999 and he moved back to Australia. After the cancer treatment, he decided however to take up cycling again. His friend and Unibet teammate Baden Cooke helped him to get a place in the professional stable Mercury-Viatel.
When he came to Europe for the first time in 2001 he sold his car and his only bike to pay the flight. He won a stage in Tour de l' Avenir 2001 and with his stage win he earned a stagiaire contract as well at Française des Jeux. When he went home to Australia for winter he told Marc Madiot that he had to sell his bike so he would need another one in order to train. Madiot was so impressed by Wilson's dedication that he included the story in his motivational speeches for young riders.
From the following year Wilson rode for Française des Jeux together with Baden Cooke.
At the start of 2003, Wilson won the Australian road race championship.
He won the Herald Sun Tour in October 2007 winning 2 stages along the way. He also said it was his most important and favourite victory in his life.
