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Stefanos Tsitsipas beats Roger Federer in ATP Finals semi-final – as it happened! | ATP World Tour Finals | The Guardian
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Roger Federer Upset by Stefanos Tsitsipas in Straight Sets at 2019 ATP Finals | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
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Roger Federer Upset by Stefanos Tsitsipas in Straight Sets at 2019 ATP Finals | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
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Roger Federer crashes out of ATP Finals as debutant Stefanos Tsitsipas downs legend to reach final – The Sun | The Sun
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ATP Finals: When and where to watch Roger Federer vs Stefanos Tsitsipas semi-final live - India Today
Roger Federer says ATP Finals loss to Stefanos Tsitsipas means 'big three' is on borrowed time - ABC News
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ATP Finals 2019: Roger Federer says he knew things were not going his way against Stefanos Tsitsipas after botching two smashes-Sports News , Firstpost
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