The Staten Island Yankees, single A affiliate of the Bronx Bummers, play at
Richmond County Bank Ballpark
The ballpark is just off to the right, and a bit up the hill, from the ferry terminal at St. George. Looks pretty nice, though I've not been to a ballgame there. When I lived on Staten Island - straight up the hill and across from a small park - in the mid-1990s, the area now occupied by the ballpark was old, overgrown railyards and decaying remnants of docks. On days off from working in Theatre on Manhattan (ferry and subway commute) me and the girlfriend at the time used to go down there to scavenge for railroad souvenirs, pick wild raspberries in season, watch fireflies at dusk in summer, and enjoy all the tugboat traffic. None of THAT anymore.
EDIT:
I've Been Everywhere (Original by Hank Snow, not TV commercial Johnny Cash version)