Danzig wrote several books, including: The Racquet Game (Macmillan 1930), a history of racquet sports; The Fireside Book of Tennis (Simon & Schuster 1972); and Oh, How They Played The Game (Macmillan 1971), about the early days of American football. A critic at The New York Times called his book History of American Football: Its Great Teams, Players and Coaches (1956) "without doubt, the most ambitious and best book ever published on the subject of college football."[1] His last book, The Winning Gallery, was a collection of articles and essays about real tennis, published by the United States Court Tennis Association (USCTA).[3]
He is credited with coining the term "ace" to describe a serve in which the opposing player fails to get their racket on the ball.[2]