Eaton first began to participate in track and field events at the age of eight, under the guidance of coach Anne Marsh. He represented Australia at a Paralympic level for the first time in 1993, and won two gold medals at the 1994 FESPIC Games. He won a bronze medal in the Men's Discus F32–33 event at the 1996 Atlanta Paralympics. He won a silver medal in the men's discus at the 1998 IPC Athletics World Championships. He had an Australian Institute of Sport Athletics with a Disability scholarship from 1997 to 2000. He was also supported by the Queensland Academy of Sport.