The next generation of youngsters made their mark at the Shanghai Masters as Stefanos Tsitsipas and Alexander Zverev knocked out former champions Novak Djokovic and Roger Federer respectively, booking their semi-final spots on Friday.
19-time Grand Slam Champion Roger Federer saw off a spirited challenge from 20-year-old Alexander Zverev of Germany to reach the semi-final of the season-ending ATP World Tour Finals
Alexander Zverev stunned World number two Novak Djokovic 6-4, 6-3 in the summit clash in Rome to put himself firmly in the frame as a potential champion in the second major of the season.
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