Many more than there were even ten years ago.
Some of the better pitchers are:
C.C. Sabathia 2008 Cy Young - Yankees
Fausto Carmona 19 wins in '07 - Indians
Pedro Martinez former 3-time Cy Young - Phillies
There are also many others!
I think the Brooklyn Dodgers
Yes, it opened the door to many Great Black players.
Mr.Robinson
Jackie Robinson was the first black ballplayer in Major League Baseball, made his Major League debut with the Brooklyn Dodgers on April 15, 1947.
Approximately 60% white, 29% hispanic, 8% black, and 3% asian. visit: http://bss.sfsu.edu/tygiel/hist490/finalclass/racial_composition.htm