Unfortunately for the American fighter it wasn't a feat he managed in the ring, it was something that happened to him during a weigh in.
Instead of breaking a 'most knockouts' record or going on an epic win streak, Cancio accidentally flashed a crowd at AT&T Stadium.
The California-born boxer was preparing for his bout against Joseph Diaz Jr on the undercard of the Canelo Alvarez and Liam Smith fight.
The 27-year-old was instructed to strip off completely for the weigh in - every pound counts in this industry - and stood in front of the crowd naked.
Fortunately his team were on hand with a curtain to cover the fighter's modesty as he weighed in at 126¼ lbs - a little heavier than the 125½ lbs of Diaz.
What follows is chaos as the crowd react by screaming and the fighter scrambles to shield himself with his hands.
As you can see he gets lucky and just about manages to do so.
Adding insult to injury, Cancio was later beaten by Diaz in a ninth round stoppage.
There were no knockdowns in the featherweight fight but referee Gregorio Alvarez called a halt on proceedings after Cancio suffered a bad cut to his nose.