Two off the top of my head. In the post fight interview after Mercer fought Witherspoon, he said nobody had ever hit him like that. This was December 1996, He had fought Lennox Lewis earlier in the year and had been in the ring with big punchers like Bert Cooper (whom he had a back and forth war with) and Tommy Morrison, who landed plenty of hard hitting shots that Mercer admitted had him "farting in the ring", which I always found hilarious. Speaking of Cooper, I've heard Oliver McCall saying nobody hit him like Bert. Interesting that a guy who cut to the classic cruiser limit of 190 pounds potentially hit harder then Tyson or Lennox Lewis, but it is called boxing, not punching. What accounts come to mind for you?