Jerusalem Mill is the home field for “The Chesapeake Nine,” Vintage Baseball Club. This nine-inning vintage sport adheres to rules set in 1864, which calls for nine players per team, underhand pitching, no gloves and wooden bats. This triple header features our home team along with “The Keystone 9” and “The Rising Sun Club.” No admission fee. Bring the kids! For more information about The Mid Atlantic Vintage Base Ball League, go to their website here.