Loundras competed in the team parallel bars event. In that competition, Loundras was a member of the Ethnikos Gymnastikos Syllogos team that placed third of the three teams in the event, giving him a bronze medal. At 10 years 218 days he remains the youngest medalist and competitor in Olympic history, if one discounts an unknown competitor, who competed as coxswain for the Dutch coxed pair rowing team in the 1900 Olympics, (which for this reason is considered a mixed team), believed to be a French boy from 7 to 10 years old, but who according to Dutch expert Tony Bijkerk he was more likely nearer 12 years of age.