Nigeria, Aug. 30 -- Filip Hrgovic produced a stunning upset at the O2 Arena in London, stopping highly rated British-Nigerian prospect Moses Itauma in the ninth round to claim the vacant IBF heavyweight world title.

Itauma entered the contest widely regarded as the favourite, with many expecting the unbeaten 21-year-old to continue his rapid rise and become the second-youngest heavyweight world champion in boxing history.

But Hrgovic had other plans.

The Croatian weathered Itauma's early threat before gradually turning the contest in his favour as the fight progressed. Itauma appeared to expend significant energy trying to maintain his pace, and by the later rounds, the previously unbeaten contender was visibly struggling to remain on ...