ABSTRACT
Few sports have undergone the marked developments that have characterized tennis over the past century and a half. While a handful of the world’s most popular team and individual sports have experienced comparable international growth and the commercialization and professionalization of their players, competitions and governing associations, few have seen also such marked changes to how and by whom the game is played, in the technologies, tactics and playing styles employed, and in the broad and various demographics of participating players. In this regard, contemporary 21st century tennis, while not entirely unrecognizable from its earlier antecedents, has nevertheless undergone a remarkable and extensive transformation.
