Final answer:
There were scandals involving gambling in baseball history, such as the 1919 World Series. However, it is not accurate to say that William Hulbert specifically allowed players in the National League to gamble.
Step-by-step explanation:
In the context of gambling in baseball history, there were scandals involving gambling that affected the integrity of the game. One of the most notable scandals was the 1919 World Series, where the Chicago White Sox intentionally lost to the Cincinnati Reds. This led to the rise of local teams, including African American teams like the All Nations. However, it is not accurate to say that William Hulbert specifically allowed players in the National League to gamble, as gambling was a widespread issue in baseball during that time.