Passage 6.12.6
Τίμωνι δὲ τῷ Αἰσύπου καθέντι ἐς Ὀλυμπίαν ἵππους ἀνδρὶ Ἠλείῳ ἐστι τοῦτο χαλκοῦν, ἐπʼ αὐτὸν ἀναβέβηκε παρθένος, ἐμοὶ δοκεῖν Νίκη. Κάλλωνα δὲ τὸν Ἁρμοδίου καὶ τὸν Μοσχίωνος Ἱππόμαχον, γένος τε Ἠλείους καὶ πυγμῇ κρατήσαντας ἐν παισί, τὸν μὲν αὐτῶν ἐποίησε Δάιππος , Ἱππομάχου δὲ ὅστις μὲν τὸν ἀνδριάντα εἰργάσατο οὐκ ἴσμεν, καταμαχέσασθαι δὲ τρεῖς φασιν ἀνταγωνιστὰς αὐτὸν οὔτε πληγὴν ἀποδεξάμενον οὔτε τι τρωθέντα τοῦ σώματος.
There is a bronze statue dedicated to Timon, son of Aesopus, an Elean who sent horses to Olympia; upon it stands a maiden who, in my opinion, is Victory. Callon son of Harmodius and Hippomachus son of Moschion—both Elians by birth and victorious as boys in boxing—are also commemorated by statues; Daippus made the statue of Callon, whereas the sculptor of the statue of Hippomachus we do not know. They say, however, that Hippomachus defeated three opponents without receiving a single blow or sustaining any injury to his body.