Congrats to the kid... that being said...
It seems extremely irresponsible that a parent of a 16 year old, no matter how tough he is, would let him fight a grown man, even if he is 125lbs!
This is the kind of stuff that gives the great sport of MMA a bad name, just like the kid with no arms or legs fighting. What if this Nealy kid would have gotten hurt really badly? It would have been a huge deal that some old man pounded a young high school kid, and just gives ammunition to the city officials around the country that want to ban this sport.
Again, nothing against the kid ( I know some good UFC fighters who fought when they were underage), good win, but we need a governing body over MMA to keep kids under 18 fighting only kids under 18; For the safety of the kids.