Margarito-Cintron II was a sickening liver shot KO. DLH got a nice one in on Derrell Coley years ago. That was probably the only fight in his career where he attacked the body solidly. Hatton had a good one on Jose Luis Castillo too.
What about clearly damaging liver shots were the guy got up, still clearly hurting? Gatti vs Ward comes to mind.
Bute vs Andrade 2 KO Is it possible to land better than this? brutal.. 2.09 [ame]http://www.youtube.com/watch?v=Hwf8IK5iiB0[/ame]