09.01.2014 04:05 Uhr, Quelle: Engadget

Here's a smart tennis racquet that'll improve your swing

Unless you're Novak Djokovic or John McEnroe, then it's highly unlikely that you're 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

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