Conversation so far:
When did Bob Fitzsimmons win the heavy weight title?
In 1896, Bob Fitzsimmons won a disputed version of the World Heavyweight Championship in a fight in Langtry, Texas, against the Irish fighter Peter Maher.
Did Bob Fitzsimmons continue to hold his title or did he lose it?
Bob Fitzsimmons retained his heavyweight title.

Question: Who else did he fight against?
Self-contained rewrite: Who else did Bob Fitzsimmons fight against?