Switzerland's Stan Wawrinka reacts after losing his service game in the first set against Russia's Daniil Medvedev during their men's singles first round match on the first day of the 2017 Wimbledon Championships at The All England Lawn Tennis Club in Wimbledon, southwest London, on July 3, 2017. / AFP PHOTO / Adrian DENNIS / RESTRICTED TO EDITORIAL USE        (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)