African-American participation in baseball is on the decline. This isn't a new development. Over the past couple years, a number of black athletes have addressed the issue.This isn't just an issue for other black players, it's becoming an issue for black fans, according to comedian Chris Rock. Rock gave his take on the alarmingly low rates of blacks in baseball for HBO's "Real Sports with Bryant Gumble." (WARNING: NSFW Language).Rock's rant is humorous, obviously, but it also points out some discouraging facts about why fewer black people are playing, and watching, the game. The fact that Howard, a prominent...