LONDON, ENGLAND - NOVEMBER 12: Cristiano Ronaldo, his girlfriend Georgina Rodríguez and son Cristiano Ronaldo Jr. watch on during the singles round robin match between Novak Djokovic of Serbia and John Isner of The United States during Day Two of the Nitto ATP Finals at The O2 Arena on November 12, 2018 in London, England. (Photo by Clive Brunskill/Getty Images)
