Switzerland's Roger Federer celebrates winning the second set against Luxembourg's Gilles Muller during their men's singles second round match on day four of the 2014 Wimbledon Championships at The All England Tennis Club in Wimbledon, southwest London, on June 26, 2014. AFP PHOTO / GLYN KIRK - RESTRICTED TO EDITORIAL USE (Photo credit should read GLYN KIRK/AFP via Getty Images)
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AFP GLYN KIRK