Roneberg represented Australia at the 2000 Summer Olympics and batted for a .333 average. In 2004 he was part of the Australian Olympic baseball team, which achieved a silver medal in the baseball tournament at the Athens Olympics. Again he batted well with a .360 average.[2]
After retiring from playing professional baseball, Roneberg now plays in a small baseball league in Cairns called CBL [Cairns Baseball League] as a breakthrough Bandits player.