Daily PONDspiration [for making your mark}… JACKIE ROBINSON, No. 42. On April 15, 1947, he made his debut at first base for the Brooklyn Dodgers as the first and only black player in the Major Leagues. Great art, design and architecture aside, THAT’s inspiring. Check out the special page MLB has posted in preparation for Jackie Robinson Day with videos of players and others sharing the personal inspriration Mr. Robinson provided.