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Novak Djokovic, Rafael Nadal and Sir Andy Murray enjoy a practice alongside retiring Roger Federer | Daily Mail Online
There was something about watching Roger Federer… Novak Djokovic has the numbers, robotic, relentless'
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Roger Federer is more beautiful to watch, but Novak Djokovic is the best ever,' says ATP ace - Tennis365
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Roger Federer backs Novak Djokovic to keep winning grand slams 'for a long time' after passing Nadal's record
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