If you don't accept your new teammate then you can leave the team.
Jackie Robin had just come to the Brooklyn Dodgers but his own teammates didn't accept him because he was a black man.
Also when Jackie came on the team anyone that didn't accept him could leave the team
When Jackie started playing ball on the team, his teammates started noticing that he was actually a really good ball player.
After Jackie had played baseball it had gave more and more black kids and adults a chance to believe that they could play baseball. And many people weren't baseball fans until Jackie came and played
On one of the games that Jackie had played, he saw kids that were different races watching him and they didn't care what or who Jackie was they just cheered because he was a good player and they wanted him to win.
Both black and white had cheered for Jackie Robinson and he had thanked Rachel for it all because she was a supportive wife and she was helping Jackie the whole way.