You don’t need to get knocked out to have symptoms of brain damage, there are many football players with CTE that were never knocked out. & one tough fight could easily result in forever brain damage, happens all the time. Not to mention sparring sessions or fights/trauma from childhood. There is undeniable evidence of significant brain damage when it comes to Jon Jones & every other fighter/athlete/human who has taken shots to the head on film.

Too many people pass judgements on athletes without understanding the reality of the physics, anatomy & psychology involved. If we are going to use them for our entertainment, the least we can do is have empathy for their sacrifices & be realistic. Every shot to the head has consequences little or small.