Why don't more black Americans play Baseball?

The money is there. Ryan Howard, Jimmy Rollins, Derek Jeter, Grady Sizemore, Edwin Jackson, David Price, Marcus Thames, Curtis Granderson are black American MLB Superstars. It seems that that Spanish-speaking black MLB players know that the NBA is not for them. Nothing against the NBA but let's face it. Unless you are over 6'6" your chances of making it in the NBA are slim.