Has always played league, but also played five years of rugby union at St Laurence’s College in South Brisbane captaining the 1st XV side to 6 from 7 wins in his final year and also from where he became an Australian Schoolboys representative in 2003. Recruited to the Canberra Raiders in 2004 from Souths Logan junior club in Brisbane.
Represented Queensland Under 19s in a 2005 State of Origin curtain-raiser, starting at five-eighth. A vital member of Canberra’s finals campaign in Premier League, earning him selection in the 2005 Junior Kangaroos and the Australian Invitational XIII as a fullback.
Many respected judges believe Zillman will be come a future Rugby League great, showing great promise in lower divisions. He has filled the vacated Fullback role left by Queenslander Clinton Schifcofskein2007 for the Raiders.
In only his fifth game of top grade rugby, Zillman scored a hat-trick of tries in the Raiders' first win of the 2007 season against the Newcastle Knights, showing fans his speed and good step. Zillman continued to impress with his form for the Raiders in the 2007 NRL season, before rupturing his ACL against the NQ Cowboys and requiring a knee reconstruction. Zillman is expected to recover and continue his rapid rise through the NRL ranks in 2008 and help the young Raider's roster challenge for finals action.