Birthday boy Federer: 18 surprising facts
Happy birthday, Roger Federer! The Swiss tennis star is 36 today and is going from strength to strength, winning two of the three grand slam titles played so far this year and with a good chance of regaining the number one spot. But everyone knows that! swissinfo.ch brings you some trivia with which you can really impress your friends, such as which football team he supports and the names of his two cows…
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