My UnGoogleable Research for an Eight-Year Old

I have looked up the name to a baseball player that is African American and was really good at what he did. But they wouldnt let him play because he was a colored person, so by the time his career was over there was many many black baseball players in baseball. There is a lot of good things to see on the interenet about him. I found a lot of research that is going to help me on my research paper that I have to do. This happened a long time ago before I was even born. Now there is many different races that play in the major leagues. It is important to know this information because when it comes for the due date of my paper it has to be atleast at grade level!