The first league of professional baseball teams began in 1871 and was called the National Association. This league did not play baseball the same way MLB does. For example, batters would walk after nine pitches instead of four. Many of the teams had problems with money and split up after only one or two seasons. However two teams are still playing today. Those teams were the Boston Red Stockings, which today are the Atlanta Braves, and the Chicago White Stockings, which today are the Chicago Cubs. 