We see that phrase a lot.
“No such thing as a lucky punch.”
So was Derrick Lewis’ knockout of Curtis Blaydes at UFC Fight Night 185 an example of that? There are two ways to look at it: one from each man’s perspective. From Lewis’ perspective, no such luck was involved. He saw or anticipated Blaydes moving in for the takedown, threw one of the most effective types of punches to counter an attempted takedown, and then hammered more nails into Blaydes’ coffin for good measure.
From Blaydes’ perspective, Lewis was lucky he went for a takedown to begin with.