After playing junior football for Cambridge Park and Emu Plains JRLFC, Waterhouse made his first grade début against Melbourne Storm at Olympic Park on 17 August 2002 in round 23, which was also the same game in which Steve Turner debuted.
After playing for junior teams like Cambridge Park and Emu Plains JRLFC, Waterhouse started his professional career by making his first grade appearance against Melbourne Storm at Olympic Park on 17 August 2002 in round 23. This game was also the debut of Steve Turner.