At the 2008 Victorian Country Championships, Roeger set a Paralympic A qualifying time of 4:02.04 in the 1500 metres. At the time, this was the second best time ever set in the world. He also set qualifying times in the 800 metres and 5,000 metres. As a twenty-year-old, he represented Australia at the 2008 Summer Paralympics. He did not earn a medal at the Games. He set a personal best time in the 1,500 metre event, finishing in eighth place, and came 11th place in the final of the 5,000 metres. He did not make the finals in the 800 metre event. He was selected to represent Australia at the 2012 Summer Paralympics in athletics in the 800 metres event. His Paralympic training included five gym sessions a week with a focus on leg strength. He competed in the Men's 800 m T46 at the 2012 London and but did not medal.