Who was the first African American to play in the major leagues of baseball?

Douglas Williams

Obviously a joke answer. Doug Williams was a quarterback in the NFL for Tampa Bay and Washington, and was the Super Bowl MVP for the Redskins.

The first African-American to play Major League Baseball in the modern era was, of course, Jackie Robinson of the Brooklyn Dodgers who joined the team for the start of the 1947 season and spent his entire career, ten years, with the Dodgers.
Jackie was the first African American to play in the major leagues in the modern era. Kaitie G. , Louisiana
Jackie Robinson, who broke baseball's color line with the Brooklyn Dodgers in 1947. The first African-American credited with playing professional baseball was Moses Fleetwood Walker.