'Quinquennial.' Presumably still men's wrestling.
The inscription, IGUR I 249, specifies the suburb where the athlete is from, which also allows us to identify which Antioch is meant: 'Antiocheus apo Daphnes'. The dating is based upon Farrington (2012), 139 note 427, based upon the lack of mentioning of the Neronia founded in 60 A.D. and an estimated career length of 15 years. The source also mentions various other victories apart from the Isthmian: the athlete completed a.o. the periodos. - PK