Brennan was shot during a robbery of the bar he owned. Davis was shot during a robbery of a bar he had just sold: he was there to draw customers for the new owner and started throwing punches at the armed robbers. Stanley Ketchel had most of his fights here in Butte, where he also worked (from the age of 15) as a bouncer in the brothels. He was later put on atrain out of town as an undesirable. He took this very personally, took the name "The Michigan Assassin" and never mentioned Butte as the place where he had 41 fights.
In the Nunn/Toney fight, Toney had actually won rounds 8, 9, 10 with straight, hard right hands. The fight was originally called by Goosen, I forget his first name, and he had previously managed and trained Nunn and was trying to get him back. Watch the fight with no sound or in slow motion and it is much less one sided.