For six decades, segregation kept some of baseball’s greatest athletes from playing in the major leagues. Before Jim Crow laws came into effect in the 1880s, baseball was an integrated sport and some of its top stars were African-American. With the existing league suddenly off-limits, black players and managers organized their own, parallel organizations, known collectively as the Negro Leagues. Future Major League Hall of Famers such as Satchel Paige, Roy Campanella, and Jackie Robinson began their amazing, record-setting careers in the Negro Leagues, proving with each game that segregation was undermining the sport. Thankfully, the days of Jim Crow were numbered, and segregation in baseball came to an end April 15, 1947, when Robinson made his Major League Baseball debut with the Brooklyn Dodgers. Take a look back at some of the stars of the Negro Leagues, their incredible achievements on the baseball diamond, and their remarkable contributions to American history. Click on any photo for more info.