Curtiss joined the A.G. Spalding Company after college. In 1885 he became secretary of the company, and in 1920 president. He retired from the presidency in 1933, but remained on the board, serving as its chair until 1938. In 1892 with his brother,
Edwin Burr Curtiss, and others he started the Fairfield County Golf Club, today known as the Greenwich Country Club. Curtiss served as the club's first President, from 1892 to 1896, and again from 1921 to 1934. Curtiss was affiliated with the Amateur Athletic Union and became treasurer of the American Olympic Committee. He was one of the figures, together with
Walter Camp and others, responsible at the turn of the twentieth century with popularizing sports in the U.S. and making it a central part of American culture. He designed the first basketball in association with
James Naismith, the inventor of the game. From 1902 to 1911 he served as graduate coach of the Yale crew team, turning out five championship outfits, and from 1918 to 1940, he refereed many of the foremost crew races in the East. ==Personal life==