PERTH, Western Australia  — After losing his unified crown nearly four years ago, Vasiliy “Loma” Lomachenko is once again a world champion.

Lomachenko (18-3, 12 KOs) captured the vacant IBF lightweight world title by defeating hometown hero “Ferocious”George Kambosos Jr. (21-3, 10 KOs) via 11th-round TKO on Sunday afternoon at RAC Arena in Perth, Western Australia.