The Osaka-based youngster put the 25 year-old southpaw down twice in the fight before the referee stopped the bout in round five, inflicting Oleydong’s first defeat in 36 contests and handing Ioka the world title in just his 7th pro outing.
It wasn’t quite enough to break the all-time record for claiming a world title in the fewest fights as that honour lies with the late Saensak Muangsurin, who claimed the WBC light-welterweight title in 1975 in just his third fight and who sadly passed away in 2009.
