Veteran kickboxing megastar Mirko Cro Cop never enjoyed the best of runs during his anticipated run with the UFC; however, it all came crashing down against a comical heavyweight veteran.

Failing to make good on his long-mooted move to the UFC initially back in 2007, Croatian veteran Mirko Cro Cop debuted successfully to earn a heavyweight title eliminator.

But finding himself on the wrong side of one of the most shocking knockouts of all time, the Pride FC great was out of the UFC just as he got started.

Eventually making his Octagon comeback two years later, Cro Cop would fare no better — suffering three brutal knockouts on the trot.

Mirko Cro Cop’s shock knockout loss to Roy Nelson

Twice sharing the cage with ‘Big Country’, former Pride FC star Cro Cop boasts a 1-1 record against TUF winner Roy Nelson.

However, on this day in 2011, Cro Cop saw his UFC dream come to a crashing halt in one of the most lackluster performances of his career.

Floored by perennial underdog Nelson early in the first round, an injury-stricken Cro Cop was mounted by Nelson, who unloaded with massive hooks, knocking the Croat unconscious.

Afterwards, Cro Cop would make one final Octagon outing in a victory over Gabriel Gonzaga before avenging his loss to Nelson in his final career fight six years ago.

Dana White’s issue with Roy Nelson

Afterwards, Cro Cop would make one final Octagon outing in a victory over Gabriel Gonzaga before avenging his loss to Nelson in his final career fight six years ago.

Scolding Nelson during his lengthy tenure in the promotion, long-time promotional boss Dana White dealt with the fan-favorite knockout star for eight years under his guidance.

And taking out massive names along the way, including Brendan Schaub, Minotauro Nogueira, and ‘Bigfoot’ Silva during his tenure, Nelson was not the most appealing customer to White.

Hitting out at the Las Vegas star’s appearance, White urged Nelson to make a host of wholesale changes to his approach outside of the cage in order to be taken somewhat seriously.