They corroborate the testimony of the contemporary papers, that he trained using this unorthodox method.
Yes it was , but it was the result of a gradual wearing down that reduced Walcott to moving back to the ropes to gain brief rests ,you will see it in aging fighters and do it yourself if you box long enough.
Watch the fight again. Walcott goes all out to KO Marciano in 11 and afterwards has no legs, backpedalling and resting on the ropes. His legs betrayed him and he couldn't get off before Marciano. Yes, the coup de grace was one punch but the reason it landed had much more to do with attrition and youth.
He had full control of his legs, which he was still able to plant, while mobile, while moving his upper body. That takes energy. He wasn't groggy, dizzy, plodding, panting, or any of that. It's just your incessant paranoia that people think Rocky is a mythical Hercules. Unless you insinuate that the punch wouldn't have taken his lights out had it been round 1? If so, I'm arguing with a red-skyer.
Marciano lands quite a few giant right hands in this bout, none with the effect that the KO punch had. Round 11: "Joe's tired. Tired but game." Joe hurts Marciano and goes out for the finish but to no result. Round 12: Joe is huffing and puffing and back pedaling clumsily to start the round. Walcott is one-jabbing and clinching, eye swollen, huffing and puffing the whole time. Walcott gets Marciano with two uppercuts and thinks he has him hurt again and goes for it again. Round 13: Backpedaling on creaky legs, can't keep his distance, "plainly intent on staying away" gets put to the ropes, tries the sort of feint left throw right he has pulled off numerous times in the fight but is too tired, and now too slow, and gets caught with his right still cocked. If you can't follow the narrative of a bout perhaps you need to stick to those discussions of who hits harder than who.
Has zero to do with a one punch knockout. He was trying to keep his distance, so it wasn't a one punch KO? You really don't want Rocky to be good huh? lol
Maybe, maybe not. Here's an already tiring Walcott taking a huge, flush, back-hand hook to his exposed jaw some time around Round 7 or 8. If he'd gone down from this one, people would probably be saying some of the same things about this punch too: https://streamable.com/wu1mj IMO, there are so many variables that go into whether a given punch knocks a man out that it's hard to predict how it would've affected a different fighter or the same fighter at a different point in the fight. In many instances, I'd bet that being fresh enough physically and mentally to brace for a punch a fragment of a second quicker could make all the difference.
The KO punch was different, with Rockys feet set perfectly balanced to leverage the short right hook with all his weight. The punch in your gif is him stretching himself out a bit so that he can just land something on Walcott. The latter part of your post is true, but I don't think, and I think most people would think that it doesn't take away from a KO being a one punch KO. A fighter may also enter the ring nervous, do we take that into account too? Too much hair splitting and mental gymnastics are being attempted to discredit this KO and his power. Like someone else said, if we are raising the standards of one punch KOs above Marciano-Walcott, almost no examples will fit the bill at all.
This reminds me that I also should have mentioned that when what looks to be a huge, solid punch doesn't produce the anticipated effect, we can almost always find ways to explain how it could have been delivered with even more power or effectiveness. To be clear, I haven't done any hairsplitting or mental gymnastics, or attempted to discredit the KO. But as I've stated in the past, I do think that you and others around here significantly exaggerate Marciano's (admittedly formidable) punching power on a regular basis, in ways that make it impossible to understand how so many small or mediocre heavyweights were able to survive so many rounds under his non-stop assaults.
Sure, agreed on the first point. And I wasn't saying you were splitting hairs, I was just completing your thought. I don't think I exaggerate it. I find him one of the hardest punchers ever. I know some don't, and obviously they'll think I'm exaggerating. Not to put too much stock in one person, but Turner has seen Rocky, and trained the Klitschkos, and adamantly says that Rocky is the hardest hitter he's ever seen.