90. The National League started their endeavors in the 1870s with eight teams. By the end of its second season, how many of those eight inaugural teams were still playing in the league?
From Quiz Dave's Diamond Hardball
Answer:
3
The eight initial teams (in order of their 1876 inaugural season finish) were the Chicago White Stockings, Hartford Dark Blues, St. Louis Browns, Boston Red Stockings, Louisville Grays, New York Mutuals, Philadelphia Athletics, and Cincinnati Reds. New York and Philadelphia folded by the end of the first season in 1876. Hartford, Louisville, and St. Louis shutdown at the end of the second season leaving the league with the three initial teams. In 1878, the Indianapolis Blues, Providence Grays, and the Milwaukee Grays joined the league and that season was played with only six teams.