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Roger Federer of Switzerland (R) shakes hands with fellow country Stan Wawrinka after winning their semifinal at the Australian Open tennis tournament in Melbourne, Australia on Jan.26, 2017. Federer won by 7-5, 6-3, 1-6, 4-6, 6-3. ( The Yomiuri Shimbun via AP Images ) (KEYSTONE/AP Yomiuri Shimbun/Masahiro Sugimoto)