Conversation so far:
What was the relation between Wild Bill Kickok and Duel with Davis Tutt?
Hickok and a local gambler named Davis Tutt had several disagreements over unpaid gambling debts and their mutual affection for the same women.
How was the problem resolved?
On July 21, 1865, the two men faced off in Springfield's town square.
Which other person do Bill have a disagreement with?
Under the name "Wild Bill Hitchcock" [sic], the article recounted the "hundreds" of men whom Hickok had personally killed and other exaggerated exploits.

Question: Who was Bills main opposition?
Self-contained rewrite: Who was Wild Bill Hickok's main opposition?