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Australian Open 2019: Stefanos Tsitsipas builds on Youtube lessons to beat Roger Federer - BBC Sport
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Roger Federer Upset by Stefanos Tsitsipas in 2019 Australian Open Round of 16 | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
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Stefanos Tsitsipas beats Roger Federer: Australian Open 2019 – as it happened | Australian Open 2019 | The Guardian
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Australian Open 2019: Stefanos Tsitsipas leads 'Next Gen' charge against Roger Federer | Sports News,The Indian Express
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He has a chance' - Mats Wilander names the youngster he expects to reach Roger Federer level - Tennishead
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Melbourne, Australia. 20th Jan, 2019. Roger Federer of Switzerland (L) walks past Stefanos Tsitsipas of Greece after the men's singles 4th round match at the Australian Open in Melbourne, Australia, Jan. 20,
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Australian Open 2019 results: Rafael Nadal to face 20-year-old Stefanos Tsitsipas in semifinals - CBSSports.com
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