Passage 6.13.6
παρὰ δὲ τὸν τύραννον Δίαλλος ὁ Πόλλιδος ἀνάκειται, γένος μὲν Σμυρναῖος, Ἰώνων δὲ πρῶτος λαβεῖν ἐν Ὀλυμπίᾳ φησὶν οὗτος ὁ Δίαλλος παγκρατίου στέφανον ἐν παισίν. Θερσίλοχον δὲ Κορκυραῖον καὶ Ἀριστίωνα Θεοφίλους Ἐπιδαύριον, τὸν μὲν ἀνδρῶν πυγμῆς, Θερσίλοχον δὲ λαβόντα ἐν παισὶ στέφανον, Πολύκλειτος ἐποίησε σφᾶς ὁ Ἀργεῖος.
Next to the statue of the tyrant stands Diallos, son of Pollis, a native of Smyrna. This Diallos claimed to have been the first of the Ionians to win at Olympia the crown in boys' pankration. The statues of Thersilochos from Corcyra, who won the crown in the boys' boxing, and Aristion, son of Theophilos, from Epidauros, victorious in men's boxing, were both made by Polykleitos of Argos.