PERTH, AUSTRALIA - DECEMBER 31: Marco Comuzzo re-strings racquets during the Hopman Cup 2018 at Perth Arena on December 31, 2017 in Perth, Australia. (Photo by Will Russell/Getty Images)
PERTH, AUSTRALIA - DECEMBER 31: Marco Comuzzo re-strings racquets during the Hopman Cup 2018 at Perth Arena on December 31, 2017 in Perth, Australia. (Photo by Will Russell/Getty Images)