Mike Piazza played five games and amassed 19 plate appearances as a Florida Marlin. But such are the things from which obsessions are borne. From Ken Belson of the New York Times:
One is a corporate lawyer from Southern California with few hobbies and only the mildest interest in sports. The other is a college student from Miami who is less than half his age and has amassed a stash of memorabilia that matches his love of baseball. Yet from opposite ends of the country they share one peculiar passion: collecting trading cards of Mike Piazza in a Florida Marlins uniform.
That’s like collecting only Delaney & Bonnie-era Eric Clapton stuff. Or focusing intently on John Tyler’s vice presidency. Neat, I suppose, but says more about the enthusiast than the object of the enthusiasm.