 He made state selection for Tasmania in the three seat of the 2000 youth eight contesting the Noel Wilkinson Trophy at the Interstate Regatta within the Australian Rowing Championships.In 2003 and in 2005 he was selected in the Tasmanian's senior men's eight contesting the King's Cup at the Interstate Regatta.Roberts made his Australian representative debut in 2004 straight into the senior squad in the lightweight eight which was crewed by five Tasmanian rowers.