Conversation so far:
When did Bob Fitzsimmons win the middleweight title?
On 14 January 1891, in New Orleans, Bob Fitzsimmons won his first middleweight title from Jack Dempsey.
Was it expected that Bob Fitzsimmons would win against his opponent Sharkey?
In Bob Fitzsimmons' match against Sharkey, Fitzsimmons was favoured to win, and bets flowed heavily his way.
Had Bob Fitzsimmons won any titles before this one?
Bob Fitzsimmons had not won any titles until he won the middleweight title against Jack Dempsey.
Is there anything else interesting about Bob Fitzsimmons winning this title?
Reportedly, two freak accidents happened that day, June 2,1890: one of them being that Bob Fitzsimmons hit the bag so hard that it broke.
Did Hall take the middleweight title from Bob Fitzsimmons?
Bob Fitzsimmons spent the next two years fighting non-title bouts, until giving Hall a chance at the title in 1893. He retained the crown by a knockout in round four.
Where was Bob Fitzsimmons when he won the middleweight title?
Bob Fitzsimmons was in New Orleans when he won the middleweight title.
Are there any other interesting tidbits about Bob Fitzsimmons winning the middleweight title?
Reportedly, two freak accidents happened that day, June 2,1890: one of them being Bob Fitzsimmons' opponent allegedly slipped, getting hit in the head and the boxing exhibition was cancelled.

Question: Has he knocked anyone else out?
Self-contained rewrite: Has Bob Fitzsimmons knocked anyone else out?