The X Files - Season 6 Episode 19

Searching through an FBI reference book, Mulder finds a photograph of Arthur Dales with a baseball team and the alien bounty hunter. Mulder goes to Arthur Dales' house to ask him about the photograph. There he finds Arthur Dales' brother, also named Arthur. Mr. Dales proceeds to tell Mulder a story of a 1940s Negro baseball player in Roswell named Josh Exley who was closing in on breaking some professional baseball records. Mr. Dales tells how he was assigned to protect this player from the KKK and that Exley was actually an alien.