Boxer stele fragment from Kerameikos
A marble fragment of a funerary stele discovered in 1953, dated c. 540 BC, depicts an ancient Greek boxer. The individual's depiction as a boxer is apparent in his broken nose, cauliflower ear, and the strapped wrist that he holds aloft – these straps were used by the Ancient Greeks to secure knuckle-guards for boxing competitions.
Source: Wikipedia — Boxer stele fragment from Kerameikos (CC BY-SA 4.0)