What are the KOs or knockdowns with the most serious consequences to the victim? There are some known examples like Timmah vs Tra Telligman, Rashad vs Salmon, Santiago vs Salmon, Gono vs Hornbuckle. All of the victims were scarily out for a long time, but I'd like to hear about lesser-known exemples. Here's a gif of Shinzo Machida (Lyoto's brother) knocking out some poor dude at RFA 11. I think everyone has already seen this magnificent KO by now, but I remember a post about the consequences to Brian Wood. That post claimed Brian had a shattered jaw, some broken teeth and a fractured mouth roof. That would be pretty brutal if true. What are some other attacks with terrible consequences to the victims? Gifs are okay, but I'd rather have some discussion and read some stories instead of just gifs (there's a nice KO gif thread running already). Examples from other MMA organizations or any other fight sport are welcome.