mary_jo,
I understand where you are coming from. Boxing is a dangerous sport. There are very fast stoppages now compared to the "golden era" of boxing and less boxers are being killed from head blows. However there are still deaths in the ring occurring and I believe this to be when a boxer does not see the punch coming, and the punch lands in just the right place on the head usually the temple.
Many great boxers have killed an opponent in the ring. Sugar Ray Robinson, Ezzard Charles, and Emile Griffith to name a few.
All 3 boxers I mentioned above did this because the referees back in that era would not stop the fight when it was obvious that the opponent was no longer protecting himself, was halfway to la la land and taking repeated blows.
The Emile Griffith incident has a great movie called "Ring Of Fire" in which Emile, many years after killing Benny Paret in the ring, meets Paret’s son who was a baby when his father died and is now a grown man. The meeting of the two will make you cry. Emile spent his years in retirement here on Long Island. Of note is that Emile was a gay man back when you had to hide that stuff. I have seen many of his fights on You Tube and he was one of the greatest welter weights of all time. Hard to believe a gay man would enter such a violent sport and be so successful at it.
Here is the movie and it is a great documentary all the way through:
https://www.amazon.com/Ring-Fire-Emile-Griffith-Story/dp/B0009UC7NE/ref=sr_1_fkmr0_1?keywords=emily+...Emile’s biographies:
https://www.amazon.com/Nine-Ten-Worlds-Emile-Griffith/dp/0979994713/ref=tmm_hrd_swatch_0?_encoding=U...=
https://www.amazon.com/Mans-World-Donald-McRae/dp/147113234X/ref=pd_sbs_74_1/145-8546346-6339225?_en...I have read the first one "Nine Ten and Out" and highly recommend. Never read the other one "Mans World"
Here is the video of Emile Griffith killing Benny Paret (It is a scary look into the final minute of Benny Paret’s life)
https://www.youtube.com/watch?v=7e8jRdW73Sg