The San Francisco Giants have always been one of the organizations that embraces change. Monte Irvin being the fourth African-American to play in the major leagues, moving out west (with the urging of the Dodgers ownership), and having a female public address announcer.
They also led the way on this day in 1981 when they hired Frank Robinson to manage the team. He already was the first African-American to manage a team in the major leagues, having managed the Cleveland Indians starting in 1975. But the NL was still behind as far as full integration, and so Robinson was also the first African-American to lead a National League team as well.