If we want to include psychological cruelty (not necessarily beating someone for the sake of beating them up), then I'd put Naseem Hamed-Steve Robinson. It wasn't like a Chavez-Haugen where Hamed prolonged the beating, but he just mercilessly taunted Robinson in his hometown.
June 4, 1974 WBA Light-Middleweight Championship Bout (Tokyo, Japan) Champion- Koichi Wajima Challenger - Oscar 'Shotgun' Albarado The Champion took a frightful beating in the late rounds, and his head was bruised from the head-shot battering by Oscar Albarado. The bout should have been stopped by the WBA Supervisor or the Japanese Boxing Authority, or Referee Yusaka Yoshida, and last but not least, Koichi Wajima's corner. But no, they sent Koichi out for the 15th Round, where again he was battered by the hard-punching Oscar Albarado, who floored Koichi no less than '3-Times'. The final time for the full-count. 'Cruel and Unusual Punishment', was an understatement, as the exhausted and battered Japan Warrior could have been killed, and or suffered a serious head injury. ****ing Boxing Officials,,,,,,,,,,,,,Useless Worms
rofl Johnson was in a few ones. Jeffries and Burns never had a chance from the start and the Willard fight was brutal. Mayweather-Corrales was just complete humiliation from start to finish. Holmes-Ali was a horrible beating that should never have even happened. Gainer Vs Norwood always sickens me as well. Norwood was a good fighter and could have done some pretty big things, but he was never the same after that disgrace of a finish. Never like watching Katsidis Vs Guerrero. Although it wasn't completely one sided, Michael took a virtually non stop beating of power and accuracy for 12 rounds.
Tyson vs Holmes. Usual no fear/no respect from Tyson. I don't Know about sadistic, but Mike was looking to do as much damage as possible, but you cant let a slick guy like holmes off the hook. There was a prince naseem fight in the summer of 2000 when Naseem dropped his opponent early, then hamed himself was dropped. Naseem then koed him, but hit him mercilessyly when he was falling. From what I remember they had to bring a stretcher in. Mercer vs Morrison. I remember Mercer saying "The ref should have stopped it earlier, someone could get killed from those blows" Ok Ray Tommy was out you could have stopped hitting him. Bowe Golota 2. I dont think anyone could ever stop Bowe cause he was shot in this fight and took unbelievable punishment, although he was out on his feet, straight up warrior.Peak/Prime Bowe would have stopped Golota. maybe Tyson could stop Bowe but Riddick had the heart of a lion. Anyway Golota threw mad low blows, and the first knockdown was hit on the back of Bowes head. Bowe while scoring his own knockdown also connected on the back of the head, but was rightfully looking to hurt Golota badly. Crazy fight. Triple nut shot combo was a disgrace, sadistic in my book.Foreman Cooney. Whoo that hook/uppercut by George to end the fight was damn brutal and cold blooded. Big George was a bad bad man in the ring.