Gustavo Kuerten Pictures
LONDON, ENGLAND - NOVEMBER 18: Winner, Alexander Zverev of Germany and runner up, Novak Djokovic of Serbia pose with their trophies in between, Gustavo Kuerten following the singles final during Day Eight of the Nitto ATP Finals at The O2 Arena on November 18, 2018 in London, England. (Photo by Clive Brunskill/Getty Images)