History of the Peloponnesian War

The same were also the first that when they were to contend in the Olympic games stripped themselves naked and anointed their bodies with ointment; whereas in ancient times the champions did also in the Olympic games use breeches, nor is it many years since this custom ceased. Also there are to this day amongst the barbarians, especially those of Asia, prizes propounded of fighting with fists and of wrestling, and the combatants about their privy parts wear breeches in the exercise.