I think Pacquiao could have quite literally killed him. Valero was never cleared to box Stateside for VERY good reasons. He had clear trauma to his brain, having had surgery to remove a blood clot after a motorcycle crash. The fact that he may have already been a manic depressive, woman beating drug addict makes it hard to attribute his behavior to the brain trauma, however the way he went out is certainly consistent with it.

More to the point. Anyone who has ever had a blood clot on their brain, and probably any bleeding at all, should never be licensed to box again. There is no gray area there whatsoever and it only takes one fight to find that out the hard way. Jermain Taylor had better hope he has someone who cares enough around him, that was scary stuff in his last fight when you think about it.