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18 things you might not know about Roger Federer

In honour of Roger Federer's 18th grand slam singles title, won on Sunday at the Australian Open, swissinfo.ch offers 18 things you might not know about the sporting and personal life of the Swiss tennis champion.

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SWI swissinfo.ch - a branch of Swiss Broadcasting Corporation SRG SSR

SWI swissinfo.ch - a branch of Swiss Broadcasting Corporation SRG SSR