This place, leased to the New York Metropolitan in 1880, also held a neautral NFL game. 
1936 NFL Championship Game:  It took place on December 13 at Polo Grounds in New York City, making it the first NFL title game held on a neutral field. Polo Grounds: The Polo Grounds was the name of three stadiums in Upper Manhattan, New York City, used mainly for professional baseball and American football from 1880 until 1963. Polo Grounds:  The third Polo Grounds, built in 1890 and renovated after a fire in 1911, is the one generally indicated when "the Polo Grounds" is referenced. Polo Grounds:  It was located in Coogan's Hollow and was noted for its distinctive bathtub shape, very short distances to the left and right field walls, and an unusually deep center field. Polo Grounds:  Bounded on the south and north by 110th and 112th Streets and on the east and west by Fifth and Sixth (Lenox) Avenues, just north of Central Park, it was converted to a baseball stadium when leased by the New York Metropolitans in 1880.
i don't know