No, really: the actual dirt:
About two weeks before the players reported for spring training in February, a firm called Natural Sand Company trucked in two loads of dark, brown clay from its mine in central Pennsylvania and, with the assistance of the grounds crew here, completely renovated the infield skin at the main stadium, creating virtually the same infield surface used at Citi Field in Queens.
This may not be the most important article on the planet, but I really dug it because it taught me stuff I didn’t know. Stuff like players tend to think that Citi Field has the best infield in the majors, which is kind of neat to know. And stuff like the dirt portion of a baseball diamond covers 11,000 square feet.
Don’t look at me like that. I just like trivia, OK?