#4 Brock Lesnar
Since his debut in the WWE June 2002, people knew that Lesnar was the future. He was always a force to be reckoned with. But, when he left the WWE in 2004 many people believed that it would be the end of the road for Lesnar.
He made it to the practice team of the Minnesota Vikings after a great showing at NFL Combine. However, he could not progress further in his Football career as he was not included in the Viking’s team for the season.
But, Lesnar is one of those people who never back down from a fight, in the ring or in his life/career; he has always fought to achieve whatever he has today. Later, in 2006 it was announced that Lesnar has joined K-1 Martial Arts League.
Later in 2008, Lesnar made his debut in UFC in losing effort against Frank Mir. Lesnar would later go on to win the UFC Heavyweight Championship at UFC 91 which he would hold for nearly 2 years. He hung his MMA boots in 2011, but, would be returning for UFC 200 against Mark Hunt.