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Stefanos Tsitsipas celebrates his victory after the Men's Singles semi-final match against Roger Federer on day seven of the Nitto ATP Finals at The O2 Arena, London Stock Photo - Alamy
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ATP Finals: When and where to watch Roger Federer vs Stefanos Tsitsipas semi-final live - Sports News
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ATP Finals: Greek ace Stefanos Tsitsipas stuns Roger Federer to reach London final (VIDEO) — RT Sport News
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Stefanos Tsitsipas eclipses Roger Federer to reach ATP Finals title match | Sports News,The Indian Express
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