Vasiliy Lomachenko has stopped George Kambosos Jr in the 11th round to win the IBF lightweight title at the RAC Arena in Perth, becoming a four-time world champion across three different weight classes. The two-time Olympic gold medalist from Ukraine returned from a year-long layoff following a controversial loss to Devin Haney to punish his opponent over 10 rounds before dropping him early in the 11th…
