In what is one of the most pivotal moments in the game's history, Jackie Robinson made history when he became the first African-American to play in major league baseball on April 15, 1947.
The move was met with mixed reactions from both the public and the team, though Dodgers Manager Leo Durocher put that to bed when he stood up for Robinson, from Out of the Shadows: African American Baseball from the Cuban Giants to Jackie Robinson (2005) by Bill Kirwin:
I do not care if the guy is yellow or black, or if he has stripes like a f*****' zebra. I'm the manager of this team, and I say he plays. What's more, I say he can make us all rich. And if any of you cannot use the money, I will see that you are all traded.