Brock Lesnar proved that he had the heart and grit to go with his incredible athletic ability in July 2010.
Three years earlier, the WWE legend crossed to MMA and made it look relatively easy.
'The Beast Incarnate' smelled Randy Couture to become the UFC heavyweight champion in his fourth fight.
Then Brock Lesnar Frank Mir abused the only loss on his MMA record before he hit a 12-0 UFC Bogeyman, who had stopped every opponent he had fought in the first round.
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Brock Lesnar Rally to beat Shane Carwin
Shane Carwin won four straight UFC fights from KO to earn his heavy -weight shot.
An interim title victory over Frank Mir has set up a huge unification with Lesnar on UFC 116.
After a minute, the fight seemed to be over when Carwin unleashed a flash of bumps to floors his opponent, who temporarily curled into a ball while large shots came to fly to his bloody face.
Carwin kept washing away for a few minutes, but the referee refused to wave the fight.
Lesnar somehow managed to resist the attack and stay consciously until he saw an opening.
With about a minute left in the first round, the champion started scrambling and he got up again.
The first frame ended with Lesnar who pressed his clearly exhausted rival against the octagonal wall.
Carwin breathed very hard when he came out for the second round for the first time in his career.
Lesnar received an easy Takedown before he finally landed his own bumps from the top position.
He finally locked up an arm triangle and continued to pinch until Carwin tapped.
Lesnar celebrated wildly what is remembered as one of the best comeback victories in the UFC history.
Will Brock Lesnar ever fight again?
Brock Lesnar ran away from MMA after beating Mark Hunt on UFC 200 in July 2016.
The result was later destroyed to a no-contest after Lesnar had failed a drug test.
Almost 11 years later, Lesnar has not yet fought in MMA, but there is still a different comeback.
Boxing Icon Butterbean and former world strong man Eddie Hall recently called Lesnar.
Last year Dana White was forced to tackle the future of the WWE icon in the midst of rumors about a return to UFC 300.
“I think Brock is ready. I don't think he will ever come back,” said the UFC CEO.
At the age of 47 it seems certain that we will never see Lesnar in the UFC -Oachthoek again.