Switzerland's Stanislas Wawrinka plays a forehand return during his men's singles match against Russia's Dmitry Tursunov on day two of the 2016 Australian Open tennis tournament in Melbourne on January 19, 2016. AFP PHOTO / SAEED KHAN-- IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE / AFP / SAEED KHAN        (Photo credit should read SAEED KHAN/AFP via Getty Images)