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Switzerland's Roger Federer plays against Canada's Milos Raonic during the Wimbledon Championships men's semi-final match in southwest London, on July 8, 2016

Switzerland's Roger Federer plays against Canada's Milos Raonic during the Wimbledon Championships men's semi-final match in southwest London, on July 8, 2016 (AFP Photo/Leon Neal)

Roger Federer

Swiss tennis star