In May 2009 Pratt was elevated to the senior list when Rhys Palmer was moved to the long-term injury list. He then made his AFL debut for Fremantle in Round 7 of the 2009 AFL season at Carrara Stadium against Carlton, as a replacement for the injured Ryan Crowley. That was his first and only AFL game.[4] At times during the game he played on former Swan Districts teammate and fellow first game player Chris Yarran.[5]
He was not offered another contract after the 2009 season.
