IF you had black managers, they might hire their black friends as coaches. And if you have black coaches, they might get black players. The previous timeline shows the achievements of African-American men in baseball, but baseball and other sports are not free of racial discrimination. White men were never discriminated against, and they never had to break social barriers, and form leagues of their own that would eventually be folded. Stacking situations in which minority group members are disproportionately found in specific team positions and underrepresented in others is one of the best-documented forms of discrimination in both college and professional ranks.
Salaries are another place to look for discrimination.
Although there is no research that shows that there is no salary discrimination in baseball, there is in basketball and football. Equal pay for equal work does not exist. When performance is identical, African-Americans receive less salary than equivalent white players. African-Americans are also underrepresentd in the management positions in the organizations that govern sports. Another form of discrimination in sport is unequal opportunity for equal ability.