Definitely Rocksalt.
Chris was on top of the world, still champ, still getting that hespect. People were talking about him as the greatest MW ever. He was still thanking Jesus for every victory.
All that shite came to a violent end the moment he decided to throw an ill advised spinning kick. He got muscled to the ground and had it been anyone else and not a title fight, it would have been over. Instead he got another chance but he'd taken so much damage it was no longer a contest.
Yoel might have hit him with an absolute rocket of a knee but Luke took everything, his belt, his perfect record, his invincibility. Ain't nobody calling him the MW GOAT anymore.