17. Mariusz Pudzianowski
The former strongman is one of Poland’s biggest domestic stars. He won five World’s Strongest Man titles. According to the Guinness Book of Records, that’s more than any other athlete. After demolishing every major international weightlifting event, Pudzianowski turned to MMA.

This made massive waves in Poland, where the domestic promotion KSW is even bigger than the UFC. “Pudzian” typically fights as a super-heavyweight. His record currently stands at 12-6. But the problem for him is that he gasses out very quickly. That’s typical in the heavier divisions.