1952 Topps #382, Sam Jones RC ⭐ MLB Pioneer.
On September 12, 1959, Sam Jones of the SF Giants becomes the second black MLB pitcher to win 20 games in a season.
He is also the first black MLB pitcher to throw a no-hitter, but that happened in 1955 when he pitched for the Cubs.
Sam Jones is a MLB Pioneer as he started his professional career playing for the Cleveland Buckeyes of the Negro League.

1972 Topps #213 Billy Parker RC ⭐ MLB Pioneer
On September 9, 1971, Billy Parker became the only rookie to ever hit a walk-off home run in his debut game. This HR helped the Angels beat the Milwaukee Brewers in the 12th inning, and it was his fourth at-bat of the game. So while several players have homered in their first at-bat, Parker stands alone as the only rookie to ever hit a walk-off home run in his debut game.
Billy Parker played in the Negro League for the Indianapolis Clowns.

1963 Topps #376 Johnnie Wyatt RC ⭐ MLB Pioneer
On September 8, 1961, Johnnie Wyatt made his MLB debut with the Kansas City A's. He played in the Negro League with the Indianapolis Clowns.

1953 Topps #257, Bob Boyd RC ⭐ MLB Pioneer
On September 8, 1951, Bob Boyd made his MLB debut with the White Sox. He began his professional baseball career in the Negro League with the Memphis Red Sox.
Bob Boyd is the uncle of MLB pitcher Dennis "Oil Can" Boyd.

1960 Topps #317, Pumpsie Green RC on card autograph ⭐ MLB Pioneer
MLB credits Pumpsie Green with breaking the Boston Red Sox color barrier.
On September 7, 1959, at Fenway Park the Boston Red Sox rout the New York Yankees 12-4 as MLB Pioneer, Pumpsie Green hits his first career homerun.