This is what the announcer says at the end of any fight that ends in a knockout. But it doesn't make sense. A victory is a win. So it's like saying: The winner by knock-out win, Shane Mosely! You win by a knockout; you don't win by winning. So let's get it right and say: The winner by a knock-out.... :bbb
The Irish ones usually say "Winner by Knockout in the second round" or "Winner by Technical Knockout" etc.