. "John Avery Haldeman"@en . . "1855-12-02Z"^^ . "American baseball player" . "1855Z"^^ . . . "John Avery Haldeman (December 2, 1855 to September 17, 1899) was a journalist who played one game for Major League Baseball's Louisville Grays in the 1877 season."@en . "1899Z"^^ . . . . "1899-09-17Z"^^ . "Haldeman, John"@en .