Unless youre Novak Djokovic or John McEnroe, then its highly unlikely that youre able to take advantage of the computer-assisted coaching used by tennis pros. Like Sony, French racquet maker Babolat is hoping to bring such tech to the masses with the Play Pure Drive, a smart racquet thats packed full of sensors. The gear inside measures gyroscopic and vibrational data to show how many backhand and forehand swings youve made and where theyve hit on the strings.