Conversation so far:
how many rounds in a professional boxing match?
Professional bouts are limited to a maximum of twelve rounds, most are fought over four, six, eight or ten rounds depending upon the experience of the boxers.
why is the maximum rounds in a professional boxing match 12?
By 1988, to the displeasure of some boxing purists, all fights had been reduced to a maximum of 12 rounds only, partially for safety, and partially for television

Question: was there a related event regarding safety that limited the maximum rounds?
Self-contained rewrite: was there a related event regarding safety that limited the maximum rounds in a professional boxing match to 12?