Reds and Browns become the first clubs to make a trade.
On November 12November 12, 1886 — Although teams routinely buy players from other teams, the Reds and Browns become the first clubs to make a trade. St. Louis deals outfielder Hugh Nicol, who will be credited with 138 stolen bases next season, to Cincinnati in exchange for backstop “Honest” Jack Boyle, a rookie with one game of major league experience, and more importantly $400.
Sources:
Baseball Reference November 12
Sources:
This Day In Baseball November 12