I have a college baseball team near me that has a basketball team that is 95% white so i am sure they would but a black kid on the baseball team.
According to an article on ESPN, 69 out of the 750 players on 2007 opening day rosters were African American. Click on the 'African American Major Leaguers' link below to see that article.
100% - ALL of them. FACT.
Since the Major Leagues did not have any Black players in the 1900s, coaches did not have any Black players to react toward.
There are 30 major league teams. Each team has @8 coaches ( this varies by team) for a total of around 240 coaches. There are 5 managers and 37 total black coaches in the major leagues. The Dodgers have the most with 4 while 6 teams do not have any black coaches. Of the 37 coaches 13 are of Latino decent. The break down is 16 1st Base Coaches, 9 Hitting Coaches, 5 3rd Base coaches, 4 Bullpen coaches, 2 positon coaches and 1 bench coach. There are 0 black pitching coaches. I got these numbers by going to each team's site on MLB.com so feel free to go behind me and double check my numbers.
I do not think there were coaches who were black, assistant ones yes.
How many black head coaches are in the NBA right now