Switzerland's Roger Federer celebrates beating Australia's Samuel Groth during their men's singles third round match on day six of the 2015 Wimbledon Championships at The All England Tennis Club in Wimbledon, southwest London, on July 4, 2015. Federer won 6-4, 6-4, 6-7, 6-2. RESTRICTED TO EDITORIAL USE -- AFP PHOTO / JUSTIN TALLIS (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)
