The James Butler incident is probably the worst thing I've seen in boxing. A lot of guys have been all kinds of scum out of the ring, or even hit their opponents out of the blue at press conferences etc, but that was way more sickening. Butler did that simply because he lost, not to mention how much worse that made it for Grant, having been dead tired and completely off his guard.

Zab Judah was a real piece of shit back in the day as well, wouldn't have put a similar act past him, the way he went at Jay Nady after the Tszyu fight. Usually even the worst personalities in boxing have some modicum of class in defeat, if they don't that's a real tell imo.