Hyeon Chung Pictures

  • ABU DHABI, UNITED ARAB EMIRATES - DECEMBER 27: Hyeon Chung of South Korea in action against Kevin Anderson of South Africa during his men's singles match on day one of the Mubadala World Tennis Championship at International Tennis Centre Zayed Sports City on December 27, 2018 in Abu Dhabi, United Arab Emirates. (Photo by Francois Nel/Getty Images)