PERTH, AUSTRALIA - DECEMBER 30: Alexander Zverev of Germany plays a forehand to David Ferrer of Spain during day two of the 2019 Hopman Cup at RAC Arena on December 30, 2018 in Perth, Australia. (Photo by Paul Kane/Getty Images)
PERTH, AUSTRALIA - DECEMBER 30: Alexander Zverev of Germany plays a forehand to David Ferrer of Spain during day two of the 2019 Hopman Cup at RAC Arena on December 30, 2018 in Perth, Australia. (Photo by Paul Kane/Getty Images)