This place, leased to the New York Metropolitan in 1880, also held a neautral NFL game. 
1936 NFL Championship Game: The 1936 NFL Championship Game was the fourth championship game played in the National Football League (NFL). 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.
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