The Red Stockings nickname was first used by a baseball team by the Cincinnati Red Stockings, who were members of the pioneering National Association of Base Ball Players. Managed by Harry Wright, Cincinnati adopted a uniform with white knickers and red stockings and earned the famous nickname, a year or two before hiring the first fully professional team in 1869. When the club folded after the 1870 season, Wright was hired by Boston businessman Ivers Whitney Adams to organize a new team in Boston, and he brought three teammates and the "Red Stockings" nickname along. (Most nicknames were then unofficial — neither club names nor registered trademarks — so the migration was informal.) The Boston Red Stockings won four championships in the five seasons of the new National Association, the first professional league.