Monte Irvin, professional baseball player and MLB executive.
Most people are aware that Jackie Robinson was the first baseball player to break the sport's color barrier. Of course, he wasn't the only outstanding player who was left out of the good ol' boys club of Major League Baseball. Countless other athletes were toiling around in the Negro Leagues hoping for a shot at the big time. Irvin finally got his chance in 1949, two years after Robinson made history. Irvin was already at a ripe 30 years old, however, so he was heading into the later stages of his talent. He still put up fine numbers for his short time in the majors, and even mentored a young Willie Mays.
via State of New Jersey
"When you swing, pretend the ball is some racist saying the N-word."
But Irvin's most important work would come after he stopped playing in 1956. He would go on to serve as the sport's first black executive in 1968, handling the position of promotions and public relations, which he did for 16 years. He also had a hand in getting all of those amazing Negro League players into the baseball Hall of Fame, heading up a committee that got Irvin himself inducted in 1973.
So when you hear of Jackie Robinson and his incredibly important contributions, also remember that there were tons of guys like Monte Irvin who couldn't have the chance to display their talents on the biggest stage because of a bunch of petty shitheads.