![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, 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,](https://c8.alamy.com/comp/RE6G24/melbourne-australia-20th-jan-2019-roger-federer-of-switzerland-l-walks-past-stefanos-tsitsipas-of-greece-after-the-mens-singles-4th-round-match-at-the-australian-open-in-melbourne-australia-jan-20-2019-credit-lui-siu-waixinhuaalamy-live-news-RE6G24.jpg)
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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