The Planetary Baseball League was a baseball league and division of Major League Baseball which had teams across Earth in the early 21st century. They were officially related to Planetary Baseball League, Inc. A notable player was Buck Bokai, who stayed with the league for over twenty years. (DS9 Season 1 production art) The existence of the Planetary Baseball League is from the Buck Bokai baseball card seen on Ben Sisko's desk throughout Star Trek: Deep Space Nine.